MultiPointTouchArea delays release on three finger tap

When using a single MultiPointTouchArea, three fingers tap causes touch release to delay for almost one second. This turn impratical to create a virtual piano keyboard as it is not possible to play three note chords with it.

I wanted to avoid to have a MultiPointTouchArea for each key in the keyboard which can have up to 128 keys. Using a single MultiPointTouchArea makes much more sense. I think the problem doesn't happen if a MultiPointTouchArea is used per key.

I'm using Qt 5.15.2 but the problem has been here for a very long time. I'm finally trying to get a solution for it.