Can't save changed if only Modified / Add Tag info in Task

Hi,

using Erpnext v13 - Dev, after create task info and saved, and then try to update/change tag assignment, Erpnext won't triggle any update and here won't save unless modify another attribute like "priority"

![Capture2|443x89](upload://aaVspdtUzC9utjRponX4M6PJChR.jpeg) 

thanks

Regards,
Lawes