I'm stuck in the mountain again. :(

This is the third time today that I've fallen through the map or been bugged. Has anyone else had the same experience, and if so, what should I be careful about?

https://preview.redd.it/jmcryqjwxizf1.png?width=1919&format=png&auto=webp&s=85fd7ea5645f844d4d6d7839a5bf134c991f6da6