- Roblox Player throwing an unrecoverable error/not starting with +relay channel (this limits debugging potential so not relevant for average users)
- No window decorations after exiting fullscreen on at least GNOME/Xfce (resizing the window brings them back though)
- Screenshot key doesn't take Roblox screenshots when PrintScreen is used by the DE/WM (selecting "Screenshot" from the pause menu works though)
- Any issues only present in non-Direct3D/DirectX graphics modes (likely unfixable without Roblox engine developer involvement)
- Broken website windows in Player UI/login issues in Studio (requires fixes for WebView2)
- Some Player UI website windows freezing even with WebView2 working (the cause for this is unknown)
- Keyboard input issues with non-QWERTY keyboard layouts (Wine's keyboard layout handling is poor)
- Black flickering windows in Studio: https://bugs.winehq.org/show_bug.cgi?id=52283 (multiple child window handling issue?)
- Freeze after entering a place in Studio with MangoHUD and DXVK (don't know if it still happens)
- Higher RAM usage than on Windows (needs a better comparison though)
- Cursor doesn't lock on right-click/shift lock: https://bugs.winehq.org/show_bug.cgi?id=53557 (XWayland issue?)
- Roblox throwing an unrecoverable error on CPUs without AVX support (it's unknown why this happens though)
- Roblox Studio crashing when Wine is using 96 DPI: https://bugs.winehq.org/show_bug.cgi?id=55666 (the crash happens in some QString function for some weird reason)
- Roblox Studio crashing/having a black screen with Vulkan/DXVK: https://bugs.winehq.org/show_bug.cgi?id=45277 (hopefully that patch can be upstreamed some day)
- Facial animation feature not working in Roblox (it's an issue in qcap)
- Huge input lag on lower framerates in Player
- "Inverted camera" option doing nothing in Player (needs testing on Windows)
- Roblox throwing an unrecoverable error since Wine 8.16: https://bugs.winehq.org/show_bug.cgi?id=55604 (caused by commit ea640f6cece7660ffc853b7d574fbe52af34901a)
- Roblox crashing on unhandled breakpoint exception with Wine versions prior to 8.17 (seems to be fixed by Roblox themselves)
- Built-in low-quality screen recording function is broken; needs "WM ASF Writer" DirectShow filter support (installing wmp11 and qasf with winetricks is a workaround)