I am experiencing the same issue as well and I am still on Software version CGM4140COM_3.14p10s5_PROD_sey. Are you still on this version as well. I wonder when they will be pushing the new firmware.
My XB6 has not been updated yet either. Updates are staged, starting with a small number of people at first. If no problems or regressions are found during the initial roll-out, more and more people will get updated in batches over time.
It looks like they have already started the process. Maybe we will get the new firmware tomorrow. Maybe Rogers is tracking new problems and has temporarily halted the roll-out.
It looks like the fix for this issue has been pulled forward into 4.0p12s1. Most of the modems will have downloaded the firmware last night but may require a reboot to load the new build. We'll be validating the fix in the lab but would also appreciate any feedback from the community regarding the occurrence (or non-occurrence) of this issue on 4.0p12s1.