Thanks for this feedback David, I'm curious if the 1.92-2 build could work for you with Wayland as someone gave positive feedback exactly on the middle clicking topic here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-bd14a158cd.
Otherwise we'll have to backport the patch from upstream which could probably fix the issue, just for completeness the links:
Please note this update fixes serious issues with the interaction of Geany and Geany-Plugins, which have been reported at least here:
If you want to see the mess with Geany and Geany Plugins with GTK3, please check Rawhide.
Hi Michael, thanks very much for reporting this, although most likely some updates crashed already. I'm sorry for that. Can you confirm this build fixes this?