Selene, the last thing you mentioned (u8 becoming unresponsive and restarting) means it crashed. Would be good if you could preprocess the .crash file (apport-cli or /usr/share/apport/whoopsie-upload-all) and upload the .crash somewhere.
As for the issue, it's definitely visible on desktop as well - just drag the slider around and see it jump after you release it.
Selene, the last thing you mentioned (u8 becoming unresponsive and restarting) means it crashed. Would be good if you could preprocess the .crash file (apport-cli or /usr/share/ apport/ whoopsie- upload- all) and upload the .crash somewhere.
As for the issue, it's definitely visible on desktop as well - just drag the slider around and see it jump after you release it.