Live TV recording erased

I believe what you are referring is buffered content. You are correct in the sense that HDMI-CEC is not the culprit. However, that so called pre recording that is there Can disappear if channel is changed or you switch to an app or power cycle the box. So I am not sure if this is really an issue, as it seems that you have possibly solved the issue you are having.
Depending upon the model, live tv can only be paused for a minimum of 10-25 minutes. Epsecially the Pace Xi3.

Please correct me if  I am wrong. From information given it is hard to determine that this is an issue. @CTHusky72 

Got it. I had this issue for a while as well and solved it by doing three hard/cold bots. literal cold boots where it was room temp, and then used the app and told it I wanted a full system refresh and then a restart.

I then had Xfinity send a provisioning signal for it and it seemed to have solved the issue right before the magic smoke genie decided to pay me a visit (basially, i let out the magic smoke). All jokes aside, try a couple of system refreshes if you havent already, generally speaking this will force download whatever the lastest firmware is and get you somewhat up to date.
Ill wait for your reply, stay safe and healthy
JulianR1.

Thanks for your input...

However, we are not changing channels nor are we power-cycling the box and, while we do sometimes launch Netflix, that used to have no effect on the "buffered content", we are just trying to do the same things that we've been doing for YEARS and now the behavior is different so I still consider this to be an issue.

BTW, the box we have is an XG1v4, not a Pace.

Yeah, I will try that when I get a chance.  However, I don't think the issue is with OLD firmware, I think that is has to do with NEW firmware.  The issue didn't start until my old box (also a XG1r4), which I had for nearly 2 years, died and a Comcast technician came out and replaced it.  After a week of trying to figure out what was wrong and speaking with at least 3 different support people on the phone that all thought that this new behavior was weird, I took that box to an Xfinity store and got another one.  Same behavior except that this box absolutely refused to pair with a remote so I took it back and got yet anothe box.  Same behavior.  Another Comcast technician came out (who also thought the behavior was bizzare!) and tried one of the older boxes (one with a clock - don't know which model).  Again.  Same behavior.

That's why I posted this in hopes that someone at Comcast could tell me what changed!

From the sound of it, its either something with the firmware or an issue at Xfinity HQ/the content ingestion thingy, i forget the fancy term for it. Have you tried reddit? r/Comcast and r/Comcast_Xfinity, alongside social media support?
Or DSL Reports? Id reccomend some of those to see if they can figure it out, I can also tag an employee here if that would work as well.

Edit 9/27/2020 0902 CST
You might want to have this escalated. I am not sure if thats easily doable as I have never had to escalate anything with xfinity other than issues with hotpsots.
Let me know how it goes I'll wait for your response.

Yeah, that didn't do anything.

Here's my theory...

Somebody made a change to the software/firmware to address a different issue or to implement a new or different feature and, although their testing showed that whatever they tried to do worked, they didn't test that the change had any adverse effects anywhere else.  That's why none of the support personnel that I spoke with knew anything about this behavior and, while I'm sure that one of them has seen this thread, the employees that monitor this forum don't know anything about it because all they were told was about what the change that was made was supposed to do.  I'm sure that, if enough people complain about it, someone will eventually look into it.  As of this point in time, however, I seem to be the only one complaining (although I have checked with someone I know who also has Comcast and their behavior is the same as mine.  They never used the feature though so it doesn't bother them).  It's unfortunate because I found the former behavior to be very useful and, although I do have work-arounds for the new behavior, ! 

language filter bypass, left PH

Where did my post go and why was it removed? There was no inappropriate language in it.

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@CTHusky72 wrote:

Where did my post go and why was it removed? There was no inappropriate language in it.

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the very last sentence with ..royal pain... it will be edited and returned by an employee. the board tries to keep you from using non-family friendly words.

Update 10/1/20 - Tried something different a few days ago and turned my TV on in the morning without using the Xfinity remote and was surprised to see that the screensaver was up and there was no sound. Pressing any button on the remote dismisses the screensaver and the Live TV starts playing with no buffered content.  I have had occasion in the last few days to have the TV off for most of the day and noticed that, when I turned it on later, again there was no buffered content so yesterday I tried turning it on at night without the remote and again, it was on the screensaver just like in the morning. Today, I got lucky. I turned the TV on and saw the message in the first photo and, within a few minutes, the box went to screensaver. Pressing a remote button returned to live TV with no buffered content. It had been about 4 hours since I turned the TV off. Checking my Power Preferences showed that when Power Saver was on, the box would, indeed, go to sleep in 4 hours.  However, as can be seen in the second photo, my Power Saver is "OFF" so it would seem that my Power Preferences are being ignored!  The question is WHY!  So, that would seem to explain some of my issues.

Also, @Rustyben, when will my post be restored. It's been four days!  How long does it take to remove 3 characters?

only an official employee can edit and return posts. set the screen saver to max time.

Sorry, I thought that since you got it deleted, you could get it restored.

Also, it's not the screensaver (which should only come on if the system is not actively playing content, ex. paused, Guide on screen, dialog box on screen, etc.) that's causing the buffered content to be erased, it's the fact that the system is going into power-saver mode despite my preference that it doesn't. After I posted, I did a search of the forums and a lot of people started complaining about this problem starting around March.  That's probably about the same time they implemented HDMI-CEC.  As I speculated in my since-deleted post, the most likely culprit is a software change with insufficient testing.

CEC _is_ off (see photo above).

Power Saver is set to "Off" on my other sets and, in fact, they properly NEVER go into power-saver mode.  I don't see how the satellite sets could affect the main box but I will unplug them overnight to see if that changes anything.

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@CTHusky72 wrote:

Sorry, I thought that since you got it deleted, you could get it restored.

 

Also, it's not the screensaver (which should only come on if the system is not actively playing content, ex. paused, Guide on screen, dialog box on screen, etc.) that's causing the buffered content to be erased, it's the fact that the system is going into power-saver mode despite my preference that it doesn't. After I posted, I did a search of the forums and a lot of people started complaining about this problem starting around March.  That's probably about the same time they implemented HDMI-CEC.  As I speculated in my since-deleted post, the most likely culprit is a software change with insufficient testing.

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to test that turn off CEC in the set top box menu. It sounds possible that some other device (TV?) might be putting the set top box into powersave mode.

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@CTHusky72 wrote:

CEC _is_ off (see photo above).

 

Power Saver is set to "Off" on my other sets and, in fact, they properly NEVER go into power-saver mode.  I don't see how the satellite sets could affect the main box but I will unplug them overnight to see if that changes anything.

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only the one connected via HDMI would activate by CEC.