Unfortunately I have to reactivate the old thread after all:
As before in 7.07ß, not all IQ data fields are functional after resuming the app.
However, the behavior has changed:
My data field uses a background process. After resuming, I see the IQ data field home screen with no data (previously and on my other watches, the last background process data was/is displayed). After some time, probably running the background process, the data field crashes.