Dear respected Barmettler Michael,
Good day! Thank you for posting to Microsoft Community. We are happy to help you.
I’m sorry you’re having a problem but based on your description we can work together to resolve it.
For the situation you encountered, we deeply understand the inconvenience caused and apologize for it.
As per your description, it seems that you use grouped by the "Status" column. As per your screenshot, I notice that your SharePoint List grouped by the "Status" column in descending alphabetical order.
In the "Group By" view settings, if you select "show groups in ascending order" and check if it shown in correct view. And set the groupings are collapsed by default. Or sorting viewing the list rather than in the view settings.
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Also, could you please, try to uncheck/recheck grouped by the "Status" column and see there is any difference.
Also, if possible, could you please try to test in newly create SharePoint online list (for test purpose) and verify the result with me. It will help for us to narrow down your problem.
We appreciate your understanding that sometimes the initial suggestions may not resolve the problem very soon. However, we can work together to narrow down and resolve the situation. So, please kindly provide more information below to let us work further.
Appreciate your patience and understanding and thank you for your time and cooperation.
Sincerely,
Waqas Muhammad