I admit I don't fully understand how the "Coordinate Transformation Matrix" works (well, especially in the context of a mouse instead of a trackpad or something), but it appears that's the trigger for this issue.
After I eliminated that modified Coordinate Transformation Matrix, the dragging/jump issue disappeared. (For anyone else who happens to have the same problem, I was able to solve the mouse hyper-sensitivity issue like this instead: xinput set-prop "Razer Razer DeathAdder" "libinput Accel Speed" "-0.3" xinput set-prop "Razer Razer DeathAdder" "libinput Accel Profile Enabled" 0, 1 Thanks to https://patrickmn.com/aside/lowering-gaming-mouse-sensitivity- in-ubuntu-9-10/ (updated) and http://mouseaccuracy.com/ for helping me decide on a comfortable value.) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1691486 Title: Mouse cursor jumps to top left corner on click+drag To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1691486/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
