817405 - no keyup event triggered on Alt key up after any other key up when pressed together

Status: RESOLVED DUPLICATE of bug 347010

(Core :: DOM: Core & HTML, defect)

Description

[Girish Sharma [:Optimizer]]

STR :

Apply the following script using scratchpad to any page

document.addEventListener("keydown", function(e) {console.log("down " + e.keyCode);}, true);
document.addEventListener("keypress", function(e) {console.log("press " + e.charCode);}, true);
document.addEventListener("keyup", function(e) {console.log("up " + e.keyCode);}, true);

then do the following key sequence

1. Alt down
2. R down
3. R up
4. Alt up

(any other key can be used in step 2 and 3)

the last Alt up does not trigger a keyup event and the console logs can be used to verify that

Comment 1

[Olli Pettay [:smaug][[e-mail]](vacation until July 14)]

On Linux there is alt-up, but I don't see it on Windows.