Languages with characters built from multiple keypresses (e.g. Korean) don't display a character in the web/electron edit box until it has been completed

[tec27]

Reported by LEXUS:

korean letters don't type properly on ShieldBattery, it shows the IME box preview in the top left and you can still type, but you can't see what you're typing until the character is finished

Pretty sure this is due to use using a controlled input here and either not handling the proper events or React not delivering the necessary events

facebook/react#3926 is probably related and may have a fix (haven't done more than skim it yet)

[tec27]

Tested across multiple users and seems to be working fine, not sure if this is something we/React/Electron fixed without us knowing, or this was just a user-specific issue 🤷‍♂️