We are aware of an event in the Power BI workspace where a parameter update failed due to a popup blocking setting. 

It took us a long time to remedy the problem because the public information did not mention that the pop-up blocking settings prevented the updating of parameter values. 

Since we do not expect pop-ups to interfere with the update process while it is running, we would like to see a statement added somewhere in the docs that pop-ups must be allowed.