On 7 Jun 2021, at 20:03, Albrecht Schlosser wrote:
> 
> I used a VM (Ubuntu) where I had installed Wayland some time ago for tests. Almost all programs run fine and smoothly.

> test/glpuzzle does "funny things" (TM) if you let the game rotate (drag the mouse and see). Borders disappear, sometime there's a see-through effect.

I would not preclude the possibility that the VM is involved in that misbehaviour - I was doing some testing on (IIRC Fedora) VM and the GL rendering was a bit glitchy.
The same binary running native on another machine was fine. 
(The Fedora VM was because the end-user was on RHEL-something-or-other and I was working on debian, so I just wanted to see what happened on something more RHEL-like. The GL misbehaviour caused me some distress. But apparently the end-user did not see that. so I guess it was OK on their machines...)


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