CRITICAL: Found a very serious render flaw in AE under MacOS

I have a very crazy bug that I've never seen before. It is Mac platform specific under AE. I've reproduced it on multiple Macs. But it renders fine under Windows.

I have this issue where, when it hits a specific frame where a sub-comp appears, it causes the layer underneath to shift left by about two pixels. Even if I pre-render the sub-comp and bring it in as a ProRes4444 file, with alpha, and turn of the sub-comp layer... it still causes the left bump in the render. This problem does not appear when I do any form of RAM preview in the viewer. No bump shows up. ONLY when I send it to the Render Queue does it cause this problem.

This problem does not appear when rendering from Windows AE.

This is a critical flaw. I'm luck as I happen to have access to a Windows workstation in our studio as well, otherwise it would be a very serious problem for me meeting deadline.