Dubya Mark wrote:
When I click on an some apps (notes and music) in the dock once, the dot appears below the icon indicating it has been opened, however I have to click it again for it to open up on the desktop. This is intermittent with notes and consistent with music. Is there a setting to fix this?
You can try a safeboot to clear system cache files as a trouble shoot procedure—then try again a normal boot to test
Try a SafeBoot How to use safe mode on your Mac - Apple Support
Takes noticeable longer to get to the login screen, does a 5 minute disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache, etc.
Login and test. Reboot as normal and test. Caches get rebuilt automatically.