in ajaxCUmx.js, the original block (now lines 732 thru 758) was copied to the new lines 703 thru 729, and the realtime-x file numbers updated to match.
I tested this with a 9am rollover, and also had another user (UK) test it also.
Both tests seemed to work fine.
On checking the Changelog I see that the
CumulusMX/web/realtime-xT.txt is not listed, and, the new file was not included in the distro!
So please update this file and confirm if this resolves the issue.