Most already reported before, I reported invisible parts on beach here and the invisible parts by lake have been reported here and the invisble walls by track have been reported here
Most of these have all been reported before, please look through the forums to see if your bug has already been found and reported. I encourage you to also post one thing at a time instead of all of these map problems at once. Also if you could remove the images that have been suggested before so it’s less confusing that might be helpful, thanks.