Closing windows causes VRAM memory leak

[GallowsDove]

When you open a new "kitty" window, nothing special happens (as you would expect), however when you close the window VRAM usage increases by varying amount, depending on the size of the window.

I've noticed this issue when looking at another issue with increasing VRAM caused by NVIDIA.

The issue is however unrelated, I've been able to test both NVIIDA RTX 3070 and AMD RX 9070 XT and both leak VRAM.

Tested with (positively):

• Niri
• Cosmic

Tested and not impacted:

• River
• Hyprland
• Sway