Heavy distortion with static object among dynamic background

[ZzzzzzzSkyward]

The clip from Your Name. shows that the vertical bars are distorted by the horizontally moving train.
This is witnessed on v4.6 and v4.4. Using Flowframes with v1.8 and v3.1, only some frames completely lose the bars, and there are just minor distortions.

This effect can also be seen with textured horizonal line against vertical movement.

https://user-images.githubusercontent.com/55184223/228757170-7e17b595-1d14-4fd3-a606-ecd4a9d79b5a.mp4