Hello @Cota,
Welcome to our forum!
According to the situation you described, it is recommended that you click "Start key + r" and run "outlook.exe /cleanserverrules", choose to use the rules on the client instead of the server to see if the problem is solved.
If the problem still exists, it is recommended that you log in OWA, go to settings, options and recheck the rules. As shown below:
If there are still strange rules, it is recommended that you delete them and then test.
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