I was visiting a mineshaft when I came upon a chest in a cart part way in the wall. I tried to go into it using the left trigger but found I couldn’t. It took me a few moments but found my Y button (open inventory) was not working. At first I thought this was a problem with my controller but I happened to switch out of Minecraft and I found both were working outside of Minecraft. Further testing showed that this was only happening in the game, if I opened marketplace or left the game world functionality was restored. I did find out I could make the buttons work again in gameplay by save&Exiting and then launching the world again. The mineshaft I was in ultimately had 4 chest in mine carts and I found 3of4 of them expressed this problem. using a normal chest did not exhibit this.