Bug Description
It appears that the Sigil (and PageEdit for that matter) AppImages cannot detect the Dark Theme on Gnome for Fedora Workstation 42.
It also appears there is no way to manually select light or dark theme in the software.
Platform (OS)
Linux
OS Version / Specifics
Gnome 48, Fedora Workstation 42
What version of Sigil are you using?
current
Any backtraces or crash reports