How to Fix Collision Fix Not Working or Causing Weird Movement

Check the Basics First

If pushing still happens everywhere, confirm the mod is actually loaded for your current instance and that its config file was saved. Some mod loaders keep separate configs per profile, so editing one profile does not affect another. Also check whether another mod that changes player or entity collision is installed, since two mods touching the same behavior can cancel each other out.

Resolve Common Conflicts

1. If you can walk through mobs but the game feels rubber-bandy, that is usually server-side correction, not a mod bug. The server is pulling you back to where it thinks you are.

2. If only some entities still push you, revisit the per-entity toggles and make sure the correct entries are disabled.

3. If the mod seems ignored on one server but works on another, review your per-server list and the global toggle, since one may override the other.

Reset and Retest

Delete or back up the config, let the mod regenerate defaults, then reapply only the changes you need. Test in a singleplayer world first to isolate the mod from server behavior, then move to multiplayer. If movement returns to normal in singleplayer but not on a server, the issue is server-side and not something the client mod can change.