<p>I think you're probably right.<br>
Installed debuginfo , see if this gives some more info. for you:</p>
<p>Geany-INFO: /home/lylew/path/to/my/java/thread/dump/file.out : None (UTF-8)<br>
[Thread 0x7fffd6e0d700 (LWP 18434) exited]</p>
<p>(geany:18357): Gdk-ERROR **: The program 'geany' received an X Window System error.<br>
This probably reflects a bug in the program.<br>
The error was 'BadWindow (invalid Window parameter)'.<br>
(Details: serial 201628 error_code 3 request_code 18 minor_code 0)<br>
(Note to programmers: normally, X errors are reported asynchronously;<br>
that is, you will receive the error a while after causing it.<br>
To debug your program, run it with the --sync command line<br>
option to change this behavior. You can then get a meaningful<br>
backtrace from your debugger if you break on the gdk_x_error() function.)</p>
<p>Thread 1 "geany" received signal SIGTRAP, Trace/breakpoint trap.<br>
_g_log_abort (breakpoint=1) at gmessages.c:509<br>
509     }<br>
Missing separate debuginfos, use: dnf debuginfo-install adwaita-gtk2-theme-3.22.3-1.fc25.x86_64 geany-plugins-addons-1.30-1.fc25.x86_64 gvfs-client-1.30.4-1.fc25.x86_64 ibus-gtk2-1.5.14-5.fc25.x86_64 ibus-libs-1.5.14-5.fc25.x86_64 ncurses-libs-6.0-6.20160709.fc25.x86_64 vte-0.28.2-18.fc25.x86_64<br>
(gdb) bt<br>
#0  _g_log_abort (breakpoint=1) at gmessages.c:509<br>
<a href="https://github.com/geany/geany/pull/1" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/1" data-id="1860207" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#1</a>  0x00007ffff506ba87 in g_log_default_handler (log_domain=log_domain@entry=0x7ffff7069f06 "Gdk", log_level=log_level@entry=6,<br>
message=message@entry=0x555555e5a800 "The program 'geany' received an X Window System error.\nThis probably reflects a bug in the program.\nThe error was 'BadWindow (invalid Window parameter)'.\n  (Details: serial 201628 error_code 3 request"..., unused_data=) at gmessages.c:2896<br>
<a href="https://github.com/geany/geany/pull/2" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/2" data-id="1869766" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#2</a>  0x00007ffff79a252c in handler_log (domain=domain@entry=0x7ffff7069f06 "Gdk", level=level@entry=6,<br>
msg=msg@entry=0x555555e5a800 "The program 'geany' received an X Window System error.\nThis probably reflects a bug in the program.\nThe error was 'BadWindow (invalid Window parameter)'.\n  (Details: serial 201628 error_code 3 request"..., data=data@entry=0x0) at log.c:137<br>
<a href="https://github.com/geany/geany/pull/3" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/3" data-id="1870603" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#3</a>  0x00007ffff506bd94 in g_logv (log_domain=0x7ffff7069f06 "Gdk", log_level=G_LOG_LEVEL_ERROR, format=, args=args@entry=0x7fffffffd620)<br>
at gmessages.c:1297<br>
<a href="https://github.com/geany/geany/pull/4" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/4" data-id="1883601" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#4</a>  0x00007ffff506bf9f in g_log (log_domain=log_domain@entry=0x7ffff7069f06 "Gdk", log_level=log_level@entry=G_LOG_LEVEL_ERROR,<br>
format=format@entry=0x7ffff7088a94 "%s") at gmessages.c:1359<br>
<a href="https://github.com/geany/geany/pull/5" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/5" data-id="1885233" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#5</a>  0x00007ffff7053690 in gdk_x_error (display=, error=) at gdkmain-x11.c:486<br>
<a href="https://github.com/geany/geany/pull/6" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/6" data-id="1896596" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#6</a>  0x00007ffff3e93ddd in _XError (dpy=dpy@entry=0x5555557a5400, rep=rep@entry=0x555555c06670) at XlibInt.c:1434<br>
<a href="https://github.com/geany/geany/pull/7" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/7" data-id="1942910" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#7</a>  0x00007ffff3e90d07 in handle_error (dpy=0x5555557a5400, err=0x555555c06670, in_XReply=) at xcb_io.c:199<br>
<a href="https://github.com/geany/geany/pull/8" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/8" data-id="2025926" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#8</a>  0x00007ffff3e90dc5 in handle_response (dpy=dpy@entry=0x5555557a5400, response=0x555555c06670, in_XReply=in_XReply@entry=0) at xcb_io.c:311<br>
<a href="https://github.com/geany/geany/pull/9" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/9" data-id="2064608" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#9</a>  0x00007ffff3e916c5 in _XEventsQueued (dpy=dpy@entry=0x5555557a5400, mode=mode@entry=2) at xcb_io.c:350<br>
<a href="https://github.com/geany/geany/pull/10" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/10" data-id="2089194" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#10</a> 0x00007ffff3e83397 in XPending (dpy=0x5555557a5400) at Pending.c:55<br>
<a href="https://github.com/geany/geany/pull/11" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/11" data-id="2137956" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#11</a> 0x00007ffff7047911 in gdk_check_xpending (display=) at gdkevents-x11.c:159<br>
<a href="https://github.com/geany/geany/pull/12" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/12" data-id="2160253" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#12</a> 0x00007ffff704797e in gdk_event_check (source=0x5555557be5e0) at gdkevents-x11.c:2400<br>
<a href="https://github.com/geany/geany/pull/13" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/13" data-id="2220852" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#13</a> 0x00007ffff5064bc9 in g_main_context_check (context=context@entry=0x5555557be6d0, max_priority=2147483647, fds=fds@entry=0x555555e35fc0,<br>
n_fds=n_fds@entry=3) at gmain.c:3762<br>
<a href="https://github.com/geany/geany/pull/14" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/14" data-id="2327352" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#14</a> 0x00007ffff5065104 in g_main_context_iterate (context=0x5555557be6d0, block=block@entry=1, dispatch=dispatch@entry=1, self=) at gmain.c:3926<br>
<a href="https://github.com/geany/geany/pull/15" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/15" data-id="2395492" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#15</a> 0x00007ffff50654f2 in g_main_loop_run (loop=0x555555db11d0) at gmain.c:4125<br>
<a href="https://github.com/geany/geany/pull/16" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/16" data-id="2659893" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#16</a> 0x00007ffff73ed267 in IA__gtk_main () at gtkmain.c:1268<br>
<a href="https://github.com/geany/geany/pull/17" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/17" data-id="2684408" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#17</a> 0x00007ffff79a4227 in main_lib (argc=, argv=) at libmain.c:1233<br>
<a href="https://github.com/geany/geany/pull/18" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/18" data-id="2762354" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#18</a> 0x00007ffff4a57401 in __libc_start_main (main=0x555555554780 </p>, argc=2, argv=0x7fffffffdc28, init=, fini=,<br>
rtld_fini=, stack_end=0x7fffffffdc18) at ../csu/libc-start.c:289<br>
<a href="https://github.com/geany/geany/pull/19" class="issue-link js-issue-link" data-url="https://github.com/geany/geany/issues/19" data-id="2811861" data-error-text="Failed to load issue title" data-permission-text="Issue title is private">#19</a> 0x00005555555547ba in _start ()<br>
(gdb) quit<br>
A debugging session is active.<p></p>

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<script type="application/json" data-scope="inboxmarkup">{"api_version":"1.0","publisher":{"api_key":"05dde50f1d1a384dd78767c55493e4bb","name":"GitHub"},"entity":{"external_key":"github/geany/geany","title":"geany/geany","subtitle":"GitHub repository","main_image_url":"https://cloud.githubusercontent.com/assets/143418/17495839/a5054eac-5d88-11e6-95fc-7290892c7bb5.png","avatar_image_url":"https://cloud.githubusercontent.com/assets/143418/15842166/7c72db34-2c0b-11e6-9aed-b52498112777.png","action":{"name":"Open in GitHub","url":"https://github.com/geany/geany"}},"updates":{"snippets":[{"icon":"PERSON","message":"@lyle-wang in #1042: I think you're probably right. \r\nInstalled debuginfo , see if this gives some more info. for you:\r\n\r\nGeany-INFO: /home/lylew/path/to/my/java/thread/dump/file.out : None (UTF-8)\r\n[Thread 0x7fffd6e0d700 (LWP 18434) exited]\r\n\r\n(geany:18357): Gdk-ERROR **: The program 'geany' received an X Window System error.\r\nThis probably reflects a bug in the program.\r\nThe error was 'BadWindow (invalid Window parameter)'.\r\n  (Details: serial 201628 error_code 3 request_code 18 minor_code 0)\r\n  (Note to programmers: normally, X errors are reported asynchronously;\r\n   that is, you will receive the error a while after causing it.\r\n   To debug your program, run it with the --sync command line\r\n   option to change this behavior. You can then get a meaningful\r\n   backtrace from your debugger if you break on the gdk_x_error() function.)\r\n\r\nThread 1 \"geany\" received signal SIGTRAP, Trace/breakpoint trap.\r\n_g_log_abort (breakpoint=1) at gmessages.c:509\r\n509     }\r\nMissing separate debuginfos, use: dnf debuginfo-install adwaita-gtk2-theme-3.22.3-1.fc25.x86_64 geany-plugins-addons-1.30-1.fc25.x86_64 gvfs-client-1.30.4-1.fc25.x86_64 ibus-gtk2-1.5.14-5.fc25.x86_64 ibus-libs-1.5.14-5.fc25.x86_64 ncurses-libs-6.0-6.20160709.fc25.x86_64 vte-0.28.2-18.fc25.x86_64\r\n(gdb) bt\r\n#0  _g_log_abort (breakpoint=1) at gmessages.c:509\r\n#1  0x00007ffff506ba87 in g_log_default_handler (log_domain=log_domain@entry=0x7ffff7069f06 \"Gdk\", log_level=log_level@entry=6, \r\n    message=message@entry=0x555555e5a800 \"The program 'geany' received an X Window System error.\\nThis probably reflects a bug in the program.\\nThe error was 'BadWindow (invalid Window parameter)'.\\n  (Details: serial 201628 error_code 3 request\"..., unused_data=\u003coptimized out\u003e) at gmessages.c:2896\r\n#2  0x00007ffff79a252c in handler_log (domain=domain@entry=0x7ffff7069f06 \"Gdk\", level=level@entry=6, \r\n    msg=msg@entry=0x555555e5a800 \"The program 'geany' received an X Window System error.\\nThis probably reflects a bug in the program.\\nThe error was 'BadWindow (invalid Window parameter)'.\\n  (Details: serial 201628 error_code 3 request\"..., data=data@entry=0x0) at log.c:137\r\n#3  0x00007ffff506bd94 in g_logv (log_domain=0x7ffff7069f06 \"Gdk\", log_level=G_LOG_LEVEL_ERROR, format=\u003coptimized out\u003e, args=args@entry=0x7fffffffd620)\r\n    at gmessages.c:1297\r\n#4  0x00007ffff506bf9f in g_log (log_domain=log_domain@entry=0x7ffff7069f06 \"Gdk\", log_level=log_level@entry=G_LOG_LEVEL_ERROR, \r\n    format=format@entry=0x7ffff7088a94 \"%s\") at gmessages.c:1359\r\n#5  0x00007ffff7053690 in gdk_x_error (display=\u003coptimized out\u003e, error=\u003coptimized out\u003e) at gdkmain-x11.c:486\r\n#6  0x00007ffff3e93ddd in _XError (dpy=dpy@entry=0x5555557a5400, rep=rep@entry=0x555555c06670) at XlibInt.c:1434\r\n#7  0x00007ffff3e90d07 in handle_error (dpy=0x5555557a5400, err=0x555555c06670, in_XReply=\u003coptimized out\u003e) at xcb_io.c:199\r\n#8  0x00007ffff3e90dc5 in handle_response (dpy=dpy@entry=0x5555557a5400, response=0x555555c06670, in_XReply=in_XReply@entry=0) at xcb_io.c:311\r\n#9  0x00007ffff3e916c5 in _XEventsQueued (dpy=dpy@entry=0x5555557a5400, mode=mode@entry=2) at xcb_io.c:350\r\n#10 0x00007ffff3e83397 in XPending (dpy=0x5555557a5400) at Pending.c:55\r\n#11 0x00007ffff7047911 in gdk_check_xpending (display=\u003coptimized out\u003e) at gdkevents-x11.c:159\r\n#12 0x00007ffff704797e in gdk_event_check (source=0x5555557be5e0) at gdkevents-x11.c:2400\r\n#13 0x00007ffff5064bc9 in g_main_context_check (context=context@entry=0x5555557be6d0, max_priority=2147483647, fds=fds@entry=0x555555e35fc0, \r\n    n_fds=n_fds@entry=3) at gmain.c:3762\r\n#14 0x00007ffff5065104 in g_main_context_iterate (context=0x5555557be6d0, block=block@entry=1, dispatch=dispatch@entry=1, self=\u003coptimized out\u003e) at gmain.c:3926\r\n#15 0x00007ffff50654f2 in g_main_loop_run (loop=0x555555db11d0) at gmain.c:4125\r\n#16 0x00007ffff73ed267 in IA__gtk_main () at gtkmain.c:1268\r\n#17 0x00007ffff79a4227 in main_lib (argc=\u003coptimized out\u003e, argv=\u003coptimized out\u003e) at libmain.c:1233\r\n#18 0x00007ffff4a57401 in __libc_start_main (main=0x555555554780 \u003cmain\u003e, argc=2, argv=0x7fffffffdc28, init=\u003coptimized out\u003e, fini=\u003coptimized out\u003e, \r\n    rtld_fini=\u003coptimized out\u003e, stack_end=0x7fffffffdc18) at ../csu/libc-start.c:289\r\n#19 0x00005555555547ba in _start ()\r\n(gdb) quit\r\nA debugging session is active.\r\n"}],"action":{"name":"View Issue","url":"https://github.com/geany/geany/issues/1042#issuecomment-309985806"}}}</script>