I had the same problem several months ago.
Link to thread
But I could not find out, what to do.
It happened - and still happens - with every kernel version I have tried since.
I have two mice with the same problem on this manjaro machine.
When I boot to windows or use the mouse elsewhere, there is no problem.
In the end I got a wired mouse and I still love the machine with manjaro 
Viele Grüße
Axel