Mouse uncontrollable sensitivity bug

Its not really in 1.10.2, I'm talking about 1.8.9 version, I cant find 1.8.9 version in the affects version section. When I hold down right/left mouse button then move it around, I cant control the sensitivity of the mouse. I double checked the sensitivity in game and the dpi of my mouse, its all fine. I think 1.8- 1.8.9 has that bug. Also even I don't hold the left/right mouse button then i move it around, I cant control the sensitivity. I don't know if this minecraft version has the bug. Or maybe Optifine 1.8-1.8.9 has the bug. But please try to test this problem and solve it cause its really annoying. I'm not the only one who experience this problem but others too. This " bug " is really annoying especially if you pvp and you cant aim. It's really uncontrollable sensitivity. I hope you receive and read this message and take an action of it. Thank you in advance !