When working on WordPress sites, particularly the menu page it just crashes the page. Always has to be disabled so I can reorganise a menu or add pages to a menu. Logs out randomly even when set to 1 week and occasionally, when typing your password to unlock, you just get a spinning wheel that never progresses. You have to close and open your browser, only other extension I use is uBlock. Not a problem I face with Keeper that I use with my clients and team at work.

Not as poorly written as NordVPN, but close, NordVPN makes your PC FPS go to like 13 when trying to select a server and once connected and minimized allows it to go back to 240hz, or 60hz depending what your refresh rate is.