Re: [Github-comments] [geany/geany-plugins] Splitting a snowman in half crashes Geany with Spell Check (inserting a space before Unicode VARIATION SELECTOR-16) (#1041)
@hroncok what that flag does is to make illegal indexing of vectors crash rather than be ignored, so Fedora using it is why your Geany crashes but others do not, but its not why the index was out of range in the first place.