Bug 455684

SUMMARY

The cursor in Plasma 5.25.0 was inverted so that it pointed down and to the left instead of up and to the right in Fedora Rawhide/37 GNOME Boxes QEMU-KVM VMs using with 3D acceleration enabled using the virgl driver from mesa 22.1.2 and virtio gpu. The selected region was above the cursor by about 1-2 times the height of the cursor every time. In order to select and open the Application Launcher menu, the cursor had to be moved below the bottom-left of the screen. When trying to select menu items or other things in the Application Launcher menu, Firefox, Konsole, System Settings, kinfocenter, I needed to put the cursor about 1-2 cursor heights below the item to be selected.

STEPS TO REPRODUCE
1.  Boot a Fedora 36 KDE Plasma installation 
2.  Log in to Plasma on Wayland
3.  install GNOME Boxes if it isn't already with sudo dnf install gnome-boxes
4.  Download Fedora-KDE-Live-x86_64-Rawhide-20220617.n.0.iso from https://koji.fedoraproject.org/koji/buildinfo?buildID=1986249
5. Start GNOME Boxes
6. Start a QEMU-KVM VM with Fedora-KDE-Live-x86_64-Rawhide-20220617.n.0.iso in GNOME Boxes with 3 GB RAM, 3D acceleration enabled, and EFI enabled
7. Move the cursor around in Plasma with the mouse. The cursor is inverted.
8. Try to select the Application Launcher menu button at the bottom-left of the screen normally. The cursor must be moved below the bottom-left of the screen to select Application Launcher menu button to open it.
9. Try to select the menu items or icons normally in the Application launcher menu. The cursor only selects the menu items or icons when it's 1-2 cursor heights below them.
9. Start Konsole
10. Try to select the menus in Konsole normally. The cursor only selects the menus when it's 1-2 cursor heights below them.

OBSERVED RESULT
The cursor was inverted and the selected region was above the cursor position in VMs with 3D acceleration enabled

EXPECTED RESULT
The cursor would appear normally and it would select things as usual.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora Rawhide/37
(available in About System)
KDE Plasma Version: 5.25.0
KDE Frameworks Version: 5.94.0
Qt Version: 5.15.4

ADDITIONAL INFORMATION
This problem didn't happen when using the same Fedora Rawhide KDE Plasma image on bare metal with the radeonsi mesa driver and amdgpu kernel driver with an integrated Radeon R5 GPU or in a GNOME Boxes QEMU-KVM VM with 3D acceleration disabled using the llvmpipe driver and virtio gpu. The problem might involve the virgl driver.