Since the update, if I snap Firefox to the top the mouse seems to be offset a number of pixels compared to where the actual cursor is. It also affects the content in sites, not just stuff in Firefox.
Edit: Looks like it’s not just when it’s snapped, but as soon as it passes about the top 90% of the screen. Just took a screenshot, where you can see the cursor is hovering over Other Bookmarks, but it’s activating the menu above it.
Installed plasma 6 this morning and noticed the same thing. Wasn’t sure if it was ff or kde or some mysterious third option.
It does that when using X on my computer, but not when using Wayland.
If you right-click on the Firefox toolbar, select “Customize Toolbar…” and then in the bottom left corner tick the “Title Bar” checkbox, does that change anything about it?
I only get this on my endeavorOS install when I use the ALHP x86-64-v3 repo as explained here:
https://somegit.dev/ALHP/ALHP.GO
When I get rid of them it went away so I’ve avoided them for a bit.
I believe this has been caught and fixed in the latest hotfixes. Have you got 6.0.1 available?