A5 uses a software renderer and it has that problem, even A4 did. A6 no longer has the software renderer. This is not a problem with A6. The cut-outs come from camera.clip_near being high, still present in A6.
"You level up the fastest and easiest if you do things at your own level and no higher or lower" - useful tip
My 2D game - release on Jun 13th; My tutorials