<p>I've reproduced this bug in gdb:<br>
`(geany:31866): Geany-CRITICAL **: 14:17:18.690: document_close: assertion 'doc' failed<br>
**<br>
Gtk:ERROR:../../../../gtk/gtktreestore.c:1220:gtk_tree_store_remove: assertion failed: (parent != NULL)</p>
<p>Thread 1 "geany" received signal SIGABRT, Aborted.<br>
__GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51<br>
51      ../sysdeps/unix/sysv/linux/raise.c: Not a file or directory.<code>Backtrace:</code>#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="2527113" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/1" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/1/hovercard" href="https://github.com/geany/geany-plugins/pull/1">#1</a>  0x00007ffff7148801 in __GI_abort () at abort.c:79<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="2533852" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/2" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/2/hovercard" href="https://github.com/geany/geany-plugins/pull/2">#2</a>  0x00007ffff4caa335 in g_assertion_message () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="2533947" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/3" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/3/hovercard" href="https://github.com/geany/geany-plugins/pull/3">#3</a>  0x00007ffff4caa39a in g_assertion_message_expr () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="2577108" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/4" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/4/hovercard" href="https://github.com/geany/geany-plugins/pull/4">#4</a>  0x00007ffff694d24e in gtk_tree_store_remove () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="2597250" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/5" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/5/hovercard" href="https://github.com/geany/geany-plugins/pull/5">#5</a>  0x00007fffda376512 in ?? () from /usr/lib/x86_64-linux-gnu/geany/treebrowser.so<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="2626831" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/6" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/6/hovercard" href="https://github.com/geany/geany-plugins/pull/6">#6</a>  0x00007fffda376fad in ?? () from /usr/lib/x86_64-linux-gnu/geany/treebrowser.so<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="2691189" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/7" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/7/hovercard" href="https://github.com/geany/geany-plugins/pull/7">#7</a>  0x00007fffda378a6e in ?? () from /usr/lib/x86_64-linux-gnu/geany/treebrowser.so<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="2797472" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/8" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/8/hovercard" href="https://github.com/geany/geany-plugins/pull/8">#8</a>  0x00007ffff516210d in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="2810217" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/9" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/9/hovercard" href="https://github.com/geany/geany-plugins/pull/9">#9</a>  0x00007ffff517505e in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="2930074" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/10" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/10/hovercard" href="https://github.com/geany/geany-plugins/pull/10">#10</a> 0x00007ffff517d715 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3011856" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/11" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/11/hovercard" href="https://github.com/geany/geany-plugins/pull/11">#11</a> 0x00007ffff517e12f in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3095988" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/12" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/12/hovercard" href="https://github.com/geany/geany-plugins/pull/12">#12</a> 0x00007ffff69779d6 in gtk_widget_activate () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3098429" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/13" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/13/hovercard" href="https://github.com/geany/geany-plugins/pull/13">#13</a> 0x00007ffff6849f76 in gtk_menu_shell_activate_item () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3170381" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/14" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/14/hovercard" href="https://github.com/geany/geany-plugins/pull/14">#14</a> 0x00007ffff684a1f2 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3185881" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/15" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/15/hovercard" href="https://github.com/geany/geany-plugins/pull/15">#15</a> 0x00007ffff682d8f7 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3278252" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/16" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/16/hovercard" href="https://github.com/geany/geany-plugins/pull/16">#16</a> 0x00007ffff5162346 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3588482" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/17" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/17/hovercard" href="https://github.com/geany/geany-plugins/pull/17">#17</a> 0x00007ffff517d3cd in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3594236" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/18" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/18/hovercard" href="https://github.com/geany/geany-plugins/pull/18">#18</a> 0x00007ffff517e12f in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3601487" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/19" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/19/hovercard" href="https://github.com/geany/geany-plugins/pull/19">#19</a> 0x00007ffff6975534 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3604032" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/20" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/20/hovercard" href="https://github.com/geany/geany-plugins/pull/20">#20</a> 0x00007ffff682a86e in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3737714" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/21" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/21/hovercard" href="https://github.com/geany/geany-plugins/pull/21">#21</a> 0x00007ffff682c948 in gtk_main_do_event () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3754479" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/22" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/22/hovercard" href="https://github.com/geany/geany-plugins/pull/22">#22</a> 0x00007ffff633d765 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3799831" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/23" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/23/hovercard" href="https://github.com/geany/geany-plugins/pull/23">#23</a> 0x00007ffff636df92 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3800969" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/24" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/24/hovercard" href="https://github.com/geany/geany-plugins/pull/24">#24</a> 0x00007ffff4c83417 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3801033" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/25" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/25/hovercard" href="https://github.com/geany/geany-plugins/pull/25">#25</a> 0x00007ffff4c83650 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3938878" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/26" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/26/hovercard" href="https://github.com/geany/geany-plugins/pull/26">#26</a> 0x00007ffff4c83962 in g_main_loop_run () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3945752" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/27" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/27/hovercard" href="https://github.com/geany/geany-plugins/pull/27">#27</a> 0x00007ffff682ba25 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="3977141" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/28" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/28/hovercard" href="https://github.com/geany/geany-plugins/pull/28">#28</a> 0x00007ffff778c33a in main_lib () from /usr/lib/x86_64-linux-gnu/libgeany.so.0<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="4013701" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/29" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/29/hovercard" href="https://github.com/geany/geany-plugins/pull/29">#29</a> 0x00007ffff7129b97 in __libc_start_main (main=0x555555554650, argc=2, argv=0x7fffffffdfe8, init=, fini=, rtld_fini=, stack_end=0x7fffffffdfd8)<br>
at ../csu/libc-start.c:310<br>
<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="4085593" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany-plugins/issues/30" data-hovercard-type="pull_request" data-hovercard-url="/geany/geany-plugins/pull/30/hovercard" href="https://github.com/geany/geany-plugins/pull/30">#30</a> 0x000055555555468a in ?? ()`</p>

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