Have you tried a different browser?
Yes
Have you turned off your extensions?
Yes for Safari - No for Chrome
Have you cleared your cache?
Will try Safari now.
Adding on that I have experienced similar issues on Safari full screen. Certain drop down options are not showing + copy and paste menu on the main components view. It comes and goes but can be worked around.
Thanks to the team…I noticed they fixed another ‘bug’ which obscured the edit sequence screen when the “insert component” screen was visible . Thank the engineering team for fixing that too!