Hello,
I don’t know where to post this thread, beccause its happening on studio and while playing.
So basicly the mouse is going crazy, teleport everywhere on the screen.
It started when my mouse was over a clic detector; an humanoid, I’m not sure if its the trigger.
[spoiler]
I’ve recorded the glitch online, but it do the same in studio.
All my drivers/softwares are up to date.
If someone know what to do thanks.
Please, I’m going crazy its hard to clic a button
http://gyazo.com/8b27eaf3a297dcc2130732717425a94b
Try:
Do you have a gamepad attached? Are you on mac or PC?
Oh thank you ! It was my gamepad…
Would never have found it 
Why does the gamepad reset the mouse to mid-screen now? It only started happening in the last week…
This is because the gamepad sets the mouse to above your character by default so you can see where you are shooting, this is only supposed to happen if you use the gamepad though. We need to adjust the deadzone so you don’t get this issue. Thanks for the report!