post the version of GTK and Glib and OS and version (see top of help->debug messages)
Using GTK+ v3.24.23 and GLib v2.66.3 runtime libraries
``` 02:58:18: Geany INFO : Geany 1.37.1, cs_CZ.utf8 02:58:18: Geany INFO : GTK 3.24.23, GLib 2.66.3 02:58:18: Geany INFO : OS: Fedora 33 (Thirty Three) () 02:58:18: Geany INFO : System data dir: /usr/share/geany 02:58:18: Geany INFO : User config dir: /home/churchyard/.config/geany 02:58:18: GLib-GIO DEBUG : _g_io_module_get_default: Found default implementation gvfs (GDaemonVfs) for ‘gio-vfs’ 02:58:19: Geany INFO : Loaded GTK+ CSS theme '/usr/share/geany/geany.css' 02:58:19: Geany INFO : Loaded GTK+ CSS theme '/usr/share/geany/geany-3.20.css' 02:58:19: Geany INFO : System plugin path: /usr/lib64/geany 02:58:19: Geany INFO : Added filetype Cython (63). 02:58:19: Geany INFO : Added filetype Scala (64). 02:58:19: Geany INFO : Added filetype Genie (65). 02:58:19: Geany INFO : Added filetype Nim (66). 02:58:19: Geany INFO : Added filetype Arduino (67). 02:58:19: Geany INFO : Added filetype TypeScript (68). 02:58:19: Geany INFO : Added filetype Graphviz (69). 02:58:19: Geany INFO : Added filetype Groovy (70). 02:58:19: Geany INFO : Added filetype Clojure (71). 02:58:19: Geany INFO : Added filetype JSON (72). 02:58:19: Geany INFO : Added filetype Swift (73). 02:58:19: Geany INFO : Added filetype CUDA (74). 02:58:19: Geany INFO : Added filetype Kotlin (75). 02:58:19: Geany INFO : Added filetype SPEC (76). 02:58:19: Geany INFO : Loaded libvte from libvte-2.91.so.0 02:58:19: Geany INFO : Loaded: /usr/lib64/geany/splitwindow.so (Rozdělení okna) 02:58:19: SpellCheck DEBUG : Initializing Enchant library version 2.2.13 02:58:19: GLib DEBUG : unsetenv() is not thread-safe and should not be used after threads are created 02:58:19: Geany INFO : Loaded: /usr/lib64/geany/spellcheck.so (Spell Check) 02:58:19: Geany INFO : Loaded: /usr/lib64/geany/classbuilder.so (Tvořič tříd) 02:58:19: Geany INFO : unknown : None (UTF-8) ```
and also the font and size you use
Monospace Regular. Size doesn't matter (said the actress).