Safari AOL mail incompatibility

What happens if you try going to Aol website direct from Safari instead of Mail?

Messages missing after upgrading to macOS 10.11 Big Sur

You may need to rebuild a mailbox to update the list of messages it contains. For example, if messages appear to be missing or garbled, or if you can’t find all relevant messages when you search using the Entire Message search option.

https://support.apple.com/guide/mail/rebuild-mailboxes-mlhlp1227/mac

If emails appear to be missing in Mail on Mac

https://support.apple.com/guide/mail/if-emails-appear-to-be-missing-mlhlp1224/14.0/mac/11.0

This seems to be similar to issues others are having after the Safari 14.1 update 4/27/2021 and it relates to JavaScript.  

Test the following to help you isolate:

Turn off “Enable Javascript” in Safari: Preferences: Security 

See if this resolves the the issue loading pages  

This is not a solution since pages are only partially complete and lacks any Javascript functionality.  

I have been working on this issue and so far the only current workarounds / solutions are:

1) Use Firefox ( My preferred solution while I wait for Apple to release a fix/update. )

2) Use Chrome ( I avoid due to security concerns and data harvesting by the big G. )

3) Install the Apple Developer preview of Safari 14.2 ( https://developer.apple.com/safari/technology-preview/ ) NOTE this is a preview that coexists with the current version of Safari ).  Since it is not an official release there are risks.  I have tested and it works perfectly opening problem sites.

4) Apple will tell you to reinstall the OS BUT I have not tested and is time consuming...

I am still searching for a fix.

Bottom Line: At this point this is most likely an Apple bug/issue related to 14.1 and they need to offer a fix other than an OSX reinstall  and that reminds me of the #1  Microsoft Windows issue solution!