Problem

MgnlAuditLoggingContentDecoratorPropertyWrapper and LastUpdatePropertyWrapper tries to do some operation on the Property when their #setValue(anyObject()) is called, however, this given property may be deleted meanwhile by simply setValue(null) on Property

Solution

Exceptions may happen here if the given property is deleted. These exceptions are caused due to fact that we try to do some operations on the property.
Solution is simple, We should be storing these information beforehand and pass it to the related function instead of deleting the property and trying to do some operations on the very same property after, which obviously is causing some exceptions.