A bug was reported in the Library, and we are trying to rule out a hardware problem.
If you have an iMac or other 5K display, we'd appreciate if you would answer these questions for us:
- In the Library, does the ☰ hamburger menu open the sidebar?
- Have you noticed any other UI/display issues?
Please include details about your OS scaling, program scaling, and content scaling.
Thanks for your help!