Can't Press Both Shift Keys at Once

[ForgotTheSemicolon]

The keyboard input for Moonlight on my Chomebook will only recognize input from one Shift key at a time. If I press just the left Shift, it works, and if I press just the right Shift, it works, but if I press both at once, only one is recognized. I first noticed it while playing Epic Pinball via DosBox, but I reproduced the issue on a keyboard test website also. If I go to https://en.key-test.ru/ on my Chromebook, I can get both Shift keys on the screen to light up at the same time, but if I go there on the Windows desktop through Moonlight, I can only light up one Shift at a time.

[cgutman]

I think this is related to the way NaCl sends us modifier events. Rather than send specific keycodes for Left Shift and Right Shift, it sends a single Shift key code that has flags that indicate left or right. When you press Right Shift while Left Shift is down, it comes in as a key repeat and is dropped.

Assuming we do actually get separate key up events for both keys, we might be able to work around these limitations.