Creating netherrack of nowhere and literally killing myself

Here i leave a link to a video i recorded about the bug: https://www.youtube.com/watch?v=cq_RYPpzlX8

When i broke some block it becomes a netherrack block without reason, furtheremore when i died i was stucked and was able to kill myself in a literal way, after this i couldn't move and i was invisible...