When entering per period metrics (Time Scale Value - TSV) in the assignment grid, sometimes the cell you are in gets locked, and you are unable to edit the value without clicking out and going back in or waiting a certain amount of time (10 seconds or more) for the cells to unlock
This is noticed after running into defect DE60806 where tabbing can jump you down a row. When you use your mouse to click back into the correct cell and row that cell is not able to be edited (Typing in the cell doesn't change the value). Sometimes the entire row gets locked. So, if you tab to another cell in the same row, you can't enter data in that cell as well.
Release : 15.9.1, 15.9.2
Component : CLARITY PROJECT MANAGEMENT
This issue is due to
Since this issue happens after reproducing
Workaround: Wait until the cells unlock (Other rows will typically be editable)
See also Per Period Metrics known issues