Steps to reproduce
Open a new document, in the document title, slowly type 012345678901234567890123456789 (slow means about 4 character per second?)
Expected result
Title name changed to 012345678901234567890123456789
Actual result
The outcome is unpredictable, depending on when is the file name sync happened. But I think the outcome is usually not correct.
Environment
Chrome, Win 10, with file pane opened