This happened to me as well. The miner got misaligned by a cell to the right, and I think that misalignment causes the interaction bug too. It was after I got through the bedrock layer, upgraded my chassis to hold 15, and collected 15 gypsum for a quest. I went back up my tunnel from bedrock and when I was back in the previous layer I was visibly in my tunnel, but when I moved up I started mining the block to my left, and when I went right it acted like I was in my tunnel despite visibly being in the wall