Robert Hargraves wrote:
Mac OSX Preview often (1 time in 5?) enters non-responsive state. Cursor moves OK to top menu, but dropdown items don't show up. Nothing on tool bar is active. Often have to force quit Preview. Happens with many version, including Catalina 10.15.6 on my 2018 MacBook Pro, Preview version Version 11.0 (999.4). Not consistently reproducible. Here's an example of a pdf that sometimes gives the problem, Download the 2017 PAG Manual. This has been happening for a year. Is there any way to send Apple the abort status so they can debug?
To trouble shoot further you can:
—Try a SafeBoot https://support.apple.com/en-us/HT201262
Takes noticeable longer to get to the login screen, does a 5-15 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 and test as caches get rebuilt.
In Safe mode third party system modifications and system accelerations are disabled, it removes malware, etc hampering smooth operation, however a reboot will put it back to normal mode.
This test will tell you if third party interference; extensions etc are not loaded in safe boot mode.
—Test issue in another user (or guest user) account https://support.apple.com/en-us/HT204443
This will tell you if it a universal issue or isolated to your user/admin account.
