in monitoring -> overview, move the mouse cursor over the "i" icon in the upper right corner. notice how it shows 6 trigger severities, mysteriously adding "PROBLEM" below each of them.

compare that to 2.4 - it additionally shows entries "Age less than 30m" with all colours blinking, and another entry for "no trigger".

the two entries are missing, and the layout moving "PROBLEM" below each entry, instead of it being to the right, seems to be much harder to perceive.