Keyboard Input blocking in keyboard event

[teschnei]

Documentation says returning true blocks the key from being processed by the game. It appears that this is only the case when the chat box is open.

[Nifim]

Repro:

local function keyevent(dik, pressed, flags, blocked)
    if dik == 32 then
      return true
    end
end

windower.register_event('keyboard', keyevent)

with chat closed, press D, char will move.
open chat.
Press D, no d is added to the chat log.