This bug occurs systematically on my system from since a week, even after restarting system.
When I try to search a string in a document, geany crash and also all other running application applications (Firefox, Virtualbox and VMs, Visual Studio Code) but Terminal(s) survive...
Configuration: Geany 1.35 ( build May 13 2019) uname -a: Linux myhost 5.3.0-51-generic #44-Ubuntu SMP Wed Apr 22 21:09:44 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux -> Ubuntu with GNOME. Let me know for more informatios or tests.