Vines, tripwire and 3D-models bug

-Can't place vines on walls
-some 3D models disappears
-tripwire doesn't work after a few minutes on a MC-map

What I expected to happen was...:
Describe what you thought should happen here

What actually happened was...:
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Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...