Hardlock when going through door while building
I was using machop to build as normal, making my house by doing the walls then filling with roofs. I got stuck inside my house because the machop went into the door to the incomplete house and got trapped in the door tile on the inside. menus wouldnt open and I tried spamming all buttons for anything to work. had to restart game.
Image shown is me replicating the issue. If further clarity is needed I can make a video showing the exact build process to cause this issue
Same situation here, except I was using cut and I ended-up even further from walkable tiles.

You could try using the Escape Rope from your Key Items to warp to the nearest shore as a workaround to get yourself free