I updated my iMac to Mojave and re-installed SpamSieve. When I open the preference window in the Mail program it is horizontally wide, covering the entire screen of my iMac. Further, cannot be adjusted. I called Apple and they suggest it is a plugin causing this. Could it be SpamSieve?
Thanks for any suggestions.
I have seen other reports of this, but it doesn’t seem to actually be related to SpamSieve and can occur even without SpamSieve installed. Still, it’s a good first step to temporarily disable any plug-ins using the Manage Plug-Ins… button in the General preferences and see if that makes a difference. SpamSieve doesn’t modify Mail’s preferences window, but some other plug-ins do.