InputBegan doesn't work for I/O but InputEnded does

Bug Reports Engine Bugs
#1

Read me
This only occurs in Studio, I cannot recategorize this post unfortunately. It also happens for all gameProcessedEvent keys, not just I/O like the title states.

Reproduction Steps
File (just has the code on this thread placed inside of StarterPlayerScripts):
InputIssue.rbxl (28.8 KB)

Code:

local UserInputService = game:GetService("UserInputService");

UserInputService.InputBegan:Connect(function(input)
	if input.UserInputType == Enum.UserInputType.Keyboard then
		print("Input began for key:", input.KeyCode.Name);
	end
end)

UserInputService.InputEnded:Connect(function(input)
	if input.UserInputType == Enum.UserInputType.Keyboard then
		print("Input ended for key:", input.KeyCode.Name);
	end
end)

Expected Behavior
If I’m not checking whether gameProcessedEvent was true and manually returning then the code should print "Input began for key: " whenever I press any game processed keys.

Actual Behavior

image
image939×173 3.44 KB

You can see in this image that only the InputEnded message is printing.

Workaround
I have to go in game in order to test input with these keys since I can’t test them in studio.

Issue Area: Studio
Issue Type: Other
Impact: Moderate
Frequency: Constantly

1 Like
#2

I found some posts mentioning the same issue but they weren’t posted on #bug-reports.

#3

It seems to only be occurring for gameProcessedEvent keys.
Esc, I, O refuse to inoke InputBegan.

Left/Right Alt, Left/Right Control, Left/Right Shift and Tab also refuse to invoke the InputChanged event,

1 Like
#4

This is only a problem in Roblox Studio. This works fine in the client. Studio bugs would have been more appropriate.

1 Like
#5

Changed the content of the post to reflect this since I was unaware. Unfortunately I can’t seem to change the title or the category.

1 Like
#6

Thanks for the report! We’ve filed a ticket to our internal database and we’ll follow up when we have an update for you.

3 Likes
#7

If this is a bug, it’s still occurring in the current year.

edit: It seems UserInputService:IsKeyDown won’t even work for in/out keys. As of now the ONLY way of detecting the I and O keys being pressed are to use a TextBox with captured focus, which isn’t practical for many situations.

This is super annoying. There’s no reason to reserve these keys period.

Edit 2: I suppose you can try peeking into the CameraInput module in the player module.

This is very hacky and not future-proof, but it’s the only way I can think of doing this for now.

#8

I was making an input handler for a terminal system, and I ran into this problem. I tried to solve it by unbinding RbxCameraKeypress using ContextActionService. However, that did not work.

Currently, the only workaround for me is to not playtest in Studio, which hinders my workflow.

#9

Welp, looks like this bug is still happening.

The code:

local uis = game:GetService("UserInputService")
uis.InputBegan:Connect(function(obj)
	if obj.UserInputType == Enum.UserInputType.Keyboard then
		print(obj.KeyCode.Name.." key pressed!")
	end
end)
2 Likes