STEPS TO REPRODUCE
1.  launch a wine/proton games in a wayland session 
2. move your mouse around

OBSERVED RESULT
1. Games will open properly and mouse cursor seems to function fine for menus, mouse issue do not appear to be noticeable in games where you always have a traditional cursor (such a point and click game). 
2. Games where the mouse cursor is hidden and mapped to a view such as your camera, most famously in first person type games will cause the player view to jump around sporadically and/or has limited ability to turn/look left to right as if the mouse cursor is still there but hidden and is hitting the edge of the screen space. Some games even fail to grab the mouse input at all yet using the mouse cursor in said games works perfectly fine. 
3. running the same games with in a X11 session does not exhibit the same symptoms or issues, everything works as expected. 


EXPECTED RESULT
1. When playing a game, the mouse gets locked to the game space when said game space is selected
2. when "locked" to the game space/window the mouse can perform all its normal functions being both a cursor in menus and full control of the camera/view (or whatever other analog mouse input function said game might have) 

SOFTWARE/OS VERSIONS
Linux:  Arch 6.7.8-arch1-1
KDE Plasma Version: Plasma 6.0.1 
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2

ADDITIONAL INFORMATION
AMD Ryzen 5 3600X 6-Core Processor
16gb ddr RAM
AMD XFX Radeon RX 6700xt


A temporary workaround for this issue has been loading up winecfg (via protontricks) for the effected titles and selecting the option "Automatically capture mouse in full screen windows" under the graphics tab. Additionally, for titles where no mouse input would get captured at all, I had to also enable the virtual desktop under the same winecfg graphics tab. these were things I did not have to do before my package manager served me plasma 6 in todays updates. 

native linux titles do not seem to be effected by this issue