When creating a new dashboard using the Link widget, after adding a single parameter, the value of that parameter cannot be changed if the dashboard has been saved and reloaded.
After changing the value of the parameter, it reverts to the old value immediately.
Release : 20.3
Component : UIM OPERATOR CONSOLE - DASHBOARDS/DESIGNER
The fix for this issue is included in the UIM 20.3.3 July 2021 Patch.