The link takes you to a reddit page with a video that shows the bug, I don't know if this is intentional but if you have to take engrams, rewards and other things it doesn't take you out of the screen and therefore leads you to get stuck in a loop taking a reward that has already been taken forcing you to use fast travel
I've seen the perspective issue happen, but the part about getting stuck in the vendor menu doesn't always seem to happen at the same time.
It seems to me this is a new issue this season.
Its seemingly 2 separate bugs
- If you manage to open the vendor menu while mid movement (ie forward jumping before landing) you can get the changed camera angle. It can also force you back out of the menu.
- Being trapped in vendor menus is something they've tried to fix, but it hasn't worked across all vendors so the issue still occurs