In a report services document, an attribute selector may be unable to target widgets.
You may also notice that attribute selectors targeting grids cause an additional attribute to display without the possibility of removal.
Download the Strategy 2020 Patch Installer found on the MicroStrategy Download site, and execute it on the machine(s) where your Intelligence Server is installed.
Please note that is recommended that the Intelligence Server is stopped prior to the patching being applied and restarted after.