Should triggering the contextmenu with the mouse cause a pointercancel?

[jakearchibald]

https://static-misc-3.glitch.me/pointer-test/2.html

Open the console to see logging, and right click somewhere on the page to get a context menu.

On OSX 11.5.2, I only get a pointerdown for the pointer. Is this correct? I expected to get a pointercancel or pointerup.

If the pointer is captured, Chrome releases the capture on the next pointer move after the context menu is closed. Firefox and Safari don't release the capture until the next left click.

[jakearchibald]

My workaround is to look out for a subsequent pointermove with a .buttons of 0 and synthesize a pointercancel if the pointer is currently considered 'down'.

[patrickhlauke]

x-ref https://twitter.com/jaffathecake/status/1430843636703506434

as said on twitter, my gut feeling is that triggering context menu should fire pointercancel, as the user agent should determine that the pointer is no longer "on the page" per se, but in the context menu.

[jakearchibald]

My workaround is to look out for a subsequent pointermove with a .buttons of 0 and synthesize a pointercancel if the pointer is currently considered 'down'.

Watch out for this bug https://bugzilla.mozilla.org/show_bug.cgi?id=1729440