Plants and totems do not behave properly when placed on rocks that are atop of trampolines

[CeIestiaI]

SuperTux version:| 0.6.3

Expected behavior:| Totems and plants should be able to walk on rocks like other enemies can.

Actual behavior:| The plant in the video below appears to clip into the rocks after the falling rocks and comes back out, and it seems to be in its moving animation/position even though it itself isn't moving. The totem touches the rock(s) and doesn't move around; instead it acts glitchy by repeating its left and right walking animations constantly / consistently.

Steps to reproduce actual behavior:| Video below

Additional debugging information:|

https://user-images.githubusercontent.com/83178674/164649289-54f11452-b9b8-4497-b9ab-a24e6ae18023.mp4