@pranabekka@empire Ah ha! thanks, fixed it using #flatseal - turned out to be affecting #flathub apps only. Giving those apps permissions to my font dirs did the trick!
afaik some people (including me) have problems with apps like Steam and SchildiChat blocking their screensavers while running, even when they're not doing anything on these apps.
Well, for people who use Flatpak versions of these screensaver-perm-abusing kind of apps, I now know of a workaround:
If not already done, install Flatseal (com.github.tchx84.Flatseal), open Flatseal -> [Name of the app], scroll to "Session bus" and remove the entry "org.freedesktop.ScreenSaver", which should completely take away their screensaver perms. Then also restart the app if it's currently running.
Perhaps this could be a double-edged sword in some other areas as well (apparently in e.g. Steam's case it's there for controllers from what I've read(?)), but for me personally it's a worthy sacrifice