If you look at the Chrome console output in verbose mode, you will notice the following message:
[Violation] Added non-passive event listener to a scroll-blocking ‘touchstart’ event. Consider marking event handler as ‘passive’ to make the page more responsive.
This seems to happen on pages with tabs, and probably for each tab’s event handler.
See details of the issue: https://stackoverflow.com/questions/37721782/what-are-passive-event-listeners
Apparently all major UI libraries were affected.
Can this be addressed in Quasar?