I'm sure that this was discussed before but I am not finding the topic.
I am not able to mention members that wahe "space" character into username. I attach a screenshot, I try to mention the member above but as you can see I am not able to do it
It works at my board. Here's a screenshot.
Edit: Maybe you have too much Maurizios in your list so that the one with the space can't be shown? Is there a limit how much entries of the list are shown?
Imo we should have the possibility to mention members even after pressing the space key.