Users reported that fast edit keyboard shortcuts, specifically escape to cancel and meta key+enter to save, were broken in Chrome across Windows 10, Chrome OS, and MacOS denvergeeks. The issue was observed to affect the latest beta version (v3.1.0.beta6 +178) while working on a slightly older build (v3.1.0.beta5 +340), where Ctrl + Enter served as an alternative save method denvergeeks. Canapin confirmed the reproducibility of the bug on Chrome for Windows.
The issue was addressed and fixed in pull request #22762 by cvx. Following the fix, denvergeeks confirmed that the shortcuts were working correctly again and thanked the team for the rapid resolution.
These keyboard shortcuts for fast edit seem to be broken in Chrome browser on Windows 10, Chrome OS, and MacOS.
(Even here on this Meta forum these are broken, it seems.)
Update: These are, however, working on one of my forums which is running on discourse v3.1.0.beta5 +340, but not on Latest Version: v3.1.0.beta6 +178
Where these are working, at least in Chrome in Windows 10, the meta key has no effect, but Ctrl + Enter does save.
I can repro using Chrome on Windows 
Thanks for the report! 
Yes I can confirm this has been repaired. Thank you so much for the quick fix!