White arrow??
This visual bug appears to be fixed for me when I go to Divinity’s Reach for Human characters. Try heading to your respective race’s home-town and re-entering the open field from there to see whether it’s rectified for you too.
There’s more info about this bug in thread:
https://forum-en.gw2archive.eu/forum/support/bugs/Escape-key-no-longer-opens-menu
It’s a known issue. It happens because of the low health hint on starter maps – when your health falls below threshold. A workaround to fix this is to move between maps. The easiest and least disruptive way is usually to use F12 to bring up menu, log out to ‘character selection’ then enter back into game with the same character. Beyond that, try to keep your health up while in the starter maps, to prevent it from happening.