Reset pressed keys when reseting modifiers

[EtienneLem]

aka when re-focusing window.

Teh problem

In our app we use key.isPressed(KEYS.ALT) to detect when alt is pressed to execute some alternate-power-user-hidden actions. 💪

We noticed that very often alt is being detected as pressed while it was in fact: Not pressed. 😱

Teh steps

This can be reproducible quite easily (especially when alt is being used for Alfred or Spotlight):

• Focus page/app
• Press and hold alt
• Unfocus page/app (can be by focusing dev tools)
• Release alt
• Focus page/app
• console.log(key.isPressed(18), key.getPressedKeyCodes()). 💥

In long-lived apps, you’ll notice that key.getPressedKeyCodes() tends to get bigger and bigger. The only way to reset it is finding and pressing all the keys present in the array. 😅

Teh fix

Reseting _downKeys on resetModifiers fixes that. 🤘

I can’t really think of a false-positive or unexpected behaviour since key.isPressed don’t work for keys pressed prior to focusing page/app.