[reassess_blind]

mouseup has to occur before moving, or it initiates a drag

[retsibsi]

Not on Lichess. (I'm not sure about other platforms.)

With the click-to-move setting, the piece is activated on mousedown, and dragging is ignored.

[reassess_blind]

Oh I see, I forgot there was a setting. I thought it was always either behaviour, depending on what you do.