Some Gtk3 applications are noticeably slow to open

Hi folks,

I’m experiencing an issue where some Gtk3 applications take a noticeable longer time to open than they should. All applications affected are installed through the official repository. So far, Inkscape, pavucontrol and GNOME Document Scanner seems to be affected but for example, Firefox, Gimp and GTick works perfectly.

I’ve done a strace for Inkscape here and tried to understand the output but I must say it’s a bit over my pay grade :). Would
it be possible to have some help to find the issue?

Here’s my system information:

OS: Fedora 32 (64bits)
WM: bspwm

If you need more information, let me know.