Mousewheel no longer works with Bluetooth mouse?

I've got a Logitech v270 Bluetooth mouse. I've been using it with my MBP for months now. Since a day or two ago, the mousewheel has not been working on it. Scrolling the wheel does nothing anymore. It gradually got worse over yesterday, and the wheel has now seemed to have just stopped working completely, although if I make ten or more rotations with the wheel, it sometimes scrolls the minimum amount. However, scrolling still works with another USB mouse that I have. I can, however, still use the mousewheel as a button to click on links, etc. in Firefox.

Anyone have suggestions on how to fix this? I've already tried removing and readding the BT mouse, as well as resetting the SMC. I've also tried removing the "com.apple.bluetooth.plist" file. None of these methods worked.

I've also got a Logitech v470 and the wheel works fine on that Bluetooth mouse.