[Bug] Pausing slightly widens the 3D scene in Widescreen

This bug was not present in 8.0.6, but can now be found in 9.2.3: when pausing the game, the 3D environment will not be perfectly frozen in place anymore, as the image appears to widen slightly horizontally, most noticeable on the left and right edges.
Here's a comparison: I recommend opening into tabs to more easily notice the somewhat subtle difference, which still is obvious in motion.

8.0.6 Unpaused:

8.0.6 Paused:

9.2.3 Unpaused:

9.2.3 Paused:

Most notably, this bug specifically affects 16:9 and 21:9 aspect ratios, as well as any non-conforming ones. The closest to 16:9 working resolution is 1880x1080 ( 1.74:1 )
Interestingly, ratios such as 6:3 still function properly despite being wider.
Lastly, 240p vertical resolution doesn't trigger the bug ( anything at or above 256p does ), which is likely due to the offset being smaller than a N64 pixel.