Comment 9 for bug 1306499

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.