As of Carpet Mod 1.3.22 in Minecraft 1.15.2, if you die and respawn in the same dimension and don't log out, there is a chance that an invisible ghost player located at your previous death location remains, pushing you away from it.

This is especially apparent in (for example) parkour challenges (but also applies elsewhere), where the more times you fail, the harder the task gets.

To (possibly) reproduce:

1. Install fabric-carpet-1.15.2-1.3.22+v200506 and carpet-extra-1.15.2-1.3.23.
2. In a test world, place a repeating command block with the command kill @p, and place a pressure plate on it.
3. Go into survival mode. Stand 1 block directly north of the command block/pressure plate, and face south. Set your spawnpoint (/spawnpoint) there.
4. Do /gamerule doImmediateRespawn true.
5. Do /tick warp 72000.
6. Do /carpet smoothClientAnimations true.
7. Walk onto the pressure plate. You will die a bunch of times (around 8-10 to be exact).
8. Attempt to walk onto the pressure plate again. You will notice that you are pushed away from it.

The issue may be specific to the carpet-extra mod, since I have seen it reproduced in 1.15.2 with the main carpet mod being version 1.3.27. Also, the issue can't be reproduced without the carpet-extra mod.

Yeah that's what I have noticed. Will attempt to try with carpet-extra tomorrow.

Can't make it happen. Also not really sure why this would happen at all.

I'm closing this because it can't be reproduced anymore as far as I can tell.