Generally you can clip with shield rush through thin walls and the floor and even bug through edges as shown in this video:
This leads to following weird interactions on certain maps. Here is one of the examples i found:
In the screenshot this specific spot on the map “Imperial Warcamp” you can Shield Rush underneath the floor and it is pretty difficult to unstuck yourself. Most likely leads to restarting the map.
Is easier to reproduce when using a controller since you can walk closer to the wall.