UserInputService ::IsKeyDown() does not return the correct result

Bug Reports Studio Bugs
1

When using :IsKeyDown the result returned is not always correct. As you will see from this example below, the key has clearly been released but IsKeyDown still returns true.

inputService = game:GetService'UserInputService'

inputService.InputBegan:connect(function (input)
 if input.UserInputType == Enum.UserInputType.Keyboard then
  repeat
   local output = inputService.InputEnded:wait()
  until input.KeyCode == output.KeyCode
  print(inputService:IsKeyDown(input.KeyCode)
 end
end)

>> True
2

Try waiting a frame before checking?

3

This is beside the point. It’s not very useful if you have to wait a frame, that would cause input lag. I get around this myself by creating a table for keys that are pressed and setting it as soon as InputBegan or InputEnded is fired.

4

Maybe when you release the key, events are fired before the IsKeyDown’s internal table is altered.
(In that case, try coroutine.yield(), as that would yield, but like a 1/1000th of what wait() would yield for)

5

That’s why this is in bug reports.