The bug is in Scintilla widget: https://github.com/geany/geany/issues/2502#issuecomment-939463462 Sadly, Ubuntu has an old version of it.
** Bug watch added: github.com/geany/geany/issues #2502 https://github.com/geany/geany/issues/2502 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1872391 Title: underscore not shown in geany editor window To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/geany/+bug/1872391/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs