When a project is locked because it has a Tentative Schedule, other users should not be able to edit tasks. However, if you do not own the lock, you are able to modify task dates and delete a task dependency line in the Task Gantt Timeline layout in Modern User Experience (UX).
Expected Results: You are unable to delete the dependency as the project is locked
Actual Results: You are able to delete the dependency on the locked project
Modify the start and finish dates or other data for the task
Expected Results: You are unable to edit task dates or other data
Actual Results: You are able to edit task dates and other data
Release: Clarity 16.0.1
Fixed in 16.0.2