Hi @Konstantin Savov ,
I tested according to the situation you described, but I failed to reproduce your situation, my URL and display results are "05/29/2023", everything is normal.
And I checked Microsoft’s latest update on SharePoint’s known problems for you, but didn’t mention this problem. Since your problem should be an accidental event, it is difficult to provide you with more in-depth troubleshooting on the forum. We suggest you submit a service request in M365 admin center.
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