Brief hack for enabling hi-DPI mode in several applications on wayland Desktops:
When installing Signal Desktop on my Debian box using sway Desktop, I noticed ugly scaling issues on my high DPI screen.
The solution is adding flags to the program invocation:
--enable-features=UseOzonePlatform --ozone-platform=wayland
Adding these flags to my desktop file enabled the improved scaling behavior when running it through wofi.