Rotating the screen badly warps the aspect-ratio of the view contents.

This is not a new problem, but it's a really annoying visual papercut: when you rotate the screen (especially noticeable on iPhone 12 Max) the aspect ratio warps completely incorrectly during the rotation. Here's a still from such a rotation showing the extreme distortion - both of the exiting screen (the timeline) and the appearing screen (the homepage view + timeline). Interestingly the titlebar is okay; it's just the body of the screen which is warped.

We should never distort the aspect ratio.