This glitch will allow you the player to glitch through blocks and see underground structures such as mine shafts while surface mining. It happens due to the delay in which you've mined a block and when the game updates to reflect the block was mined.
This is still an ongoing issue. Due to the limitations of the Nintendo Switch I can not upload a clip of what happens. The animation issue seem to be caused by the game system after autosaves. Autosaves temporarily stop animations and the system will suddenly update after the process has finished. It causes animals, blocks, even sound to be delayed.
The glitchy movement happens regardless of if I'm on Wi-Fi or not. It happens regardless of if I'm on multiplayer or not. The last few updates have lessened the issue on my LG G6 but it has not gone away.
Yes this is still an issue. It is particularly bad during the auto saves.