Okay, so I can repeat this behavior by typing in the user name and not selecting it from the pop up list.
Like so:
I type in the username that I want to ignore (not actually adding you here, just for demonstration purposes ) but I ignore the pop up list and donāt select the user name from it:
When I set the duration for the ignore, I get the error:
But if I select the name from the pop up list, the ignore is added as expected. See how thereās a little āxā after the user name now? Thatās showing that itās properly recognized.
Can you try adding your ignore and make sure youāre selecting the username from the pop up list?
Or, alternatively, you can use the user profile to set an ignore (if the user hasnāt made that private.) Click on the username in the thread to pop up the user card, then click the username on the user card to go to the profile. From there, click where it says ānormalā to show the mute/ignore options.
Does that help?