Rule in bad after change the deadband timer

Hi all,
seems that since we updated the Ignition to version: 8.1.18 (b2022061518) it appear a small bug (editing the rule in the Model Browser) which sends a rule to BAD (even an already existing and perfectly functional) if the delay time (Deadband timer) is changed.
The issue is: if a rule in True condition and the deadband timer is modified, e.g. extending it from 3 to 15 minutes, when click on Apply the rule goes into BAD and stays in BAD. The unconditional rules without deadband doesn't have this issue.
But I cannot find if it's a known issue...

Do it happen also to someone else?

I had to check, but Designer doesn't have a "Model Browser".

Do you mean the Project Browser or the Tag Browser?
What is the "rule"?

sorry, wrong exposition, I delete the forum and I'll create another one better explained.

Just edit your question. There's a pencil icon under it.