IMAP Email Too Large On MacOS But Not On Windows

I have emClient version 10.3.2619 Installed on Windows 11 Pro and face no issues with three email accounts. All email gets downloaded with no errors or warnings. All is good for Windows.

I also have emClient version 10.3.2622 installed on my MacBook Pro where from a single email account that also exists on the Windows client I am seeing this error:

Why am I seeing this issue on MacOS only and not Windows? It’s the same emails on a single server account that both clients connect to.

I closed the MacOS client completely, gave this some time (approximately one hour wait), launched emClient for MacOS again, and now I am no longer seeing this error. All email downloads are successful.

This may have been an old issue from long ago that was already deleted on the server.