I had noticed that filter performance in 1.4 had seemed sluggish compared to 1.3 and earlier. It appears that a 250ms delay (verified by inspecting the source JS) has been introduced. As described here:
The filterable widget reacts to the
change signal by reading the value of the input after a short delay and iterating...
Can anyone shed any light on why this might be?
It gives the appearance of being far less responsive because of the delay.