Sorry to hear you are having issues. But, I cannot reproduce your issue on my system. Maybe I have different version than your Outlook. Below is my system screenshot. The new email groupy tab correctly combine upon open. But, I am not sure on mine its "olk.exe" instead of "outlook.exe".
I, however, have forwarded your problem/question to Stardock Support Team for their assistance. Please keep an eye on this thread for any updates. We appreciate your feedback and patience.
Stardock Community Assistant.