Properties update bug
We had problem with update of a Sharepoint item's property ( Single line of text).
The max length of this property is 255 chars.
We updated properties with a string that contain 250 char ( most of it is spaces).
The API didnt block this update of the property, but afterwards this file didn't open on local application.
That was a big bug for us because it locked more than 100,00o file in our system.