I checked, and this can happen with any block, as long as it isn't a full block.
[media][media][media]Marketplace packs can't be fixed by Mojang.
After testing this again, I noticed that the player can also get teleported to the side of the pistons. Not sure if that's important, but I figured I should mention it just in case.
I just checked, and this happens with any design, as long as the blocks wedging you are glass panes.
I've added a world file, so you can see my exact design. Also, this seems to only happen with glass panes. With any othe block, it works as intended.
I also used this design in older versions, and they would work fine then.
Ah OK, I'll change the title to better reflect that.
This also seems to happen if I sprint towards the pistons if I'm at the side of the hallway.
[media]This didn't happen before I updated to 1.20.1 though.
Just tested it, this happens in 1.20.30.