Mail Smart Mailbox Troubleshoot

Hello everyone,

I've had this problem on my MacBook Air since the day I bought it that in the Apple Mail App, if the iCloud account is enabled, then anything related to Gmail Account for Smart Mailbox gets replaced with iCloud stuff.

For example, if I create a smart mailbox with the rule "Message is in mailbox" : "Inbox" (and inbox is selected from the Google folder), and click Ok and then check the smart mailbox rules, the Inbox is selected from iCloud. If I choose "Account" : "Google", click Ok, and check again, it gets relaced with "iCloud". I have another account in the app, Microsoft Exchange, and smartboxes for that account work perfectly fine!

Everything for Gmail works fine if the iCloud account is disabled. Is there a way to make stuff work with both accounts enabled?

Please help me with this. I have been searching for a solution on and off for months now.

Thank you!