= Known Issues =
* X11 Windows stability issues when opening many Flash tabs on Linux. {{bug|1129492}}
* Some extensions might not work fully. But please file bugs for any of these issues!
* Some DevTools issues debugging cross-origin iframes.
* Some video player issues on YouTube and Twitch. ({{bug|1619370}}, {{bug|1620341}})
* Session restore does not restore page zoom level.* Cross-origin site iframes will appear empty when printed.* Cross-origin site iframes may occasionally appear empty in global screenshots. * Documents with cross-site iframes cannot enter the BFCache.* Session historyis not tracked for cross-site iframes.* Session restore occasionally fails to restore page state, such as page zoom, scroll offset, or form data.* DevTools support for cross-site iframes with fission is incomplete.* Attempting to debug extensions or workers from a non-fission window can cause crashes.* Resource exhaustion issues with large tab counts, including:** Excessive memory usage** File descriptor exhaustion issues** X11 connection exhaustion on Linux
= Enabling Fission =
