Transparency not working with Firefox Wayland windows
If I try to make a Firefox window transparent, either by WinKey-Alt-MouseWheelScroll or using the WinKey-Tab switcher, only the header bar becomes transparent (refer to screenshot). I tested Firefox transparency on Sway and it works OK, so the problem appears to be with Weston.
Maybe this is related to issue #366 ?
I'm running Weston 8.0 and Firefox 74.0 on Arch Linux. I start Weston from the console, open a weston-terminal, and then launch Firefox with "MOZ_ENABLE_WAYLAND=1 firefox"