Thanks for the bug report. I've seen similar issues with some mice over the years and each time for me it was a hardware problem as my mouse wheel had worn out or had manufacturing defects. So please try a different mouse or two...
Please also try uninstalling 'imwheel' (and reboot) to see if that solves the issue. If the problem is still occurring then it sounds like it might be specific to Xwayland apps. So please try logging into 'Ubuntu on Xorg' instead. ** Package changed: libinput (Ubuntu) => ubuntu ** Changed in: ubuntu Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to libinput in Ubuntu. https://bugs.launchpad.net/bugs/2015984 Title: Mouse scroll is discarded in specific cases, for specific programs Status in Ubuntu: Incomplete Bug description: Behavior observed on Jammy Jellyfish. Using a Microsoft Model 1923 mouse with incremented (clicking) scroll wheel. When running certain programs, my mouse scroll wheel exhibits odd yet highly repeatable behavior. This behavior is not present in the Ubuntu mouse tester, or in simple programs like the text editor. However, for more complex programs like Brave Browser or a game like Beyond All Reason, the behavior is always present, and always predictable. I'll describe the behavior in Brave, although similar behavior is observed in other programs. I load a new web page. I scroll down one click. Nothing happens. I scroll another click. The page "jumps" two clicks down. After this, scrolling down one click at a time works as expected. If I reverse direction and scroll up, the behavior repeats. Scroll up one click. Nothing happens. Scroll up a second click. The page "jumps" up two clicks, and then scrolling up works as intended. This behavior is not present in Linux Mint. It may sound silly, but this bug was enough to make me migrate permanently to Mint. Scrolling happens often and when the UI responds only part of the time to repetetive input, each "surprise" where the response is not as expected takes just a tiny, tiny chip out of your sanity. By the end of a day it's quite annoying. I hope someone is able to track down the problem. I'm a fan of Ubuntu and have used it for many years. Cheers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/2015984/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp