Problem with holding down the mouse buttons (SVEN RX-G740)
Solution 1:
Update. After some more tests, I discovered that it's just the rmb and not all of them. I guess the right button is just loose or something. In that case I think I should just get my mouse back to the shop where I got it for guarantee.
I guess the moral of the story is to test the device problems more accurately so you could understand it and make decision.