Every way a press can end has to send its release, or a hold it started keeps repeating

Fact

When pressing starts something and releasing stops it (hold to repeat, a long-press timer, a held tool), pointerup is only one of the ways a press ends. A second finger turning it into a pinch, focus loss or a hidden page, and a pointercancel end it too. Handling those by flagging the press as a drag (press.moved = true) or forgetting it (press = null) does stop the tap, but the release never reaches whatever the press started, so the repeat keeps firing: at the first finger's spot for as long as the pinch lasts, or by itself after a blur until the next press.

Why it matters

It reads as the gesture doing the wrong thing ("pinching also builds"), so the search goes to the pinch maths. One-finger taps and drags, and a quick pinch, all pass; it takes two fingers held longer than the hold delay.

How to apply

• One endPress() that clears the record and emits the release; call it from every path that abandons a press: a second finger landing, blur and visibilitychange, pointercancel.
• While two or more fingers are down, no finger starts a press: test size >= 2, not === 2, or a third finger (a resting palm) starts one mid-pinch.
• When a pinch ends with one finger still down, start a fresh drag from that finger's current position, already past the tap threshold. A drag record kept from before the pinch turns the view by everything the finger travelled during it.
• Test with real multi-touch, holding the pinch past the hold delay, and count the uses of the action rather than looking at the result of one.

Related: [[gesture-completion-belongs-to-its-press]], [[puppeteer-touch-handles-for-multi-finger-gestures]].