Issue with updated version 23.3.6?

I have update to current version 23.3.6 but stumbled over a small problem. Maybe only at my side - however I want to find out if it is a general problem.

In one of my inbound policies I have added a new signature service. Of course because of the new feature.

I want to add some text to a mail (top or bottom). So I add a new text and save the changes. If I change to any other topic in my SMG or logout/login. All changes are gone. I have tested different browsers, different machines - but never a success.

Only in my environment or a general issue?

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