@Olivier Testing your patch with mutter 3.26.2, it does not resolve the problem. It makes the black artifacts outside the windows disappear, however the right and the bottom edge of the window flicker badly inside, black and otherwise, I would say that aspect is worse than before.
Anyway I noticed snapping / tiling windows got very smooth in 3.26. I can not see black flickering when tiling to window to half, or dragging it to the top and let it maximize.
Would it be possible for you to look into that issue again? This is a very visible issue and makes the Wayland experience bad, especially for users who do not know the reasons.
@Olivier Testing your patch with mutter 3.26.2, it does not resolve the problem. It makes the black artifacts outside the windows disappear, however the right and the bottom edge of the window flicker badly inside, black and otherwise, I would say that aspect is worse than before.
Anyway I noticed snapping / tiling windows got very smooth in 3.26. I can not see black flickering when tiling to window to half, or dragging it to the top and let it maximize.
Would it be possible for you to look into that issue again? This is a very visible issue and makes the Wayland experience bad, especially for users who do not know the reasons.