This add depth writting to avoid missing pixels that haven't
been rendered by the render engine. But this forces to
not use the blending mode (otherwise we would have
order dependent results). Removing blending breaks selection
outlines so we have to move the rendering of the facing
overlay before the outline overlay. This doesn't fix the
situation for in-front objects but it improves the current
behavior for non-in-front objects.
Fix#121662
ec36412c45