P: Edit/Sync Photo changes the Capture Time.

I am having a similar problem.  Here is my workflow to recreate the problem:

1.  Take photo with iphone

2.  Import photo into Lightroom app on iphone (v10.0.2)

3.  Open Lightroom Classic (14.1 release).  Let photo sync into Lightroom Classic.

Lightroom goes into a continuous sync process whereby every few minutes it is syncing a new capture time (plus 5 hours) via a metadata change to the version in the cloud. The date change syncs to Lightroom and the process continues.  The only way I have found to stop it, other than turning off syncing, is to open Lightroom Desktop and delete all the "synced and backed up" photos from the cloud.  Then go back into Lightroom Classic and use the "Revert Capture Time to Original" command under the Metadata menu.

Here are a few screenshots.  I took a photo of the time on my Macbook screen at 9:54 am.

@9992955 Try making some kind of change with one of your photos (adjust a slider, move it on the map, etc) and let the photo sync. I'm fairly certain you will notice another 2 hour shift if you do.

@Armand Jacobs Photo I already mentioned in a later message that I also found a few photos with only two hour shifts, so that two times two hours could explain the four hours I initially only saw. On the other hand: I have not seen any six or eight hour shifts, and that I would expect too in that case.

I have the same issue, when Cloud sync is on, it keeps on syncing and changes the sort order / capture time on newly imported photos that are in a synced collection. So I had to turn Cloud Sync off.

That is annoying, I really need the Cloud sync, but cannot have Adobe destroy the metadata of my photos.

@Armand Jacobs Photo : yes I downgraded to 14.0.1. I noticed the change of capture time and they were still wrong after downgrading. I don't touch any synchronized photos until this is fixed cause I dont wanna ruin my hole LR cataloge. Sort by capture time is one of the most importand functunalities (basic) when trying to organize more thank 100k photos.

@Primalisten 
The GMT+0 was my guess but Johan W. Elzenga experienced time shifts that did not seem GMT+0 related (4h instead of 2h).
However I imagine it could be possible that the time shift occured 2 times on these pictures.
@JohanElzenga Do you reckon it could be possible?
Has anyone exeprience "time shifts" on the pictures that would *not* be a multiple of  the number of hours they have more or less on their time zone. For instance a 5 hours change on the picture for someone who is on a GMT+7 time zone would not be coherent whereas a 4h change on GMT+2 would still be possible if the problem occured twice.

@chriswhite Could you provide more information on the problem persisting after downgrading:
Did you downgrade to 14.0.1 ?
The files that were impacted and had had their timestamp overwritten should still have the wrong time on them I guess but do you experience new pictures having their timestamp changed on 14.0.1 ? 

This might be worth to add:
On my side I experience a -2h problem on my synced pictures only since I updated to LRc 14.1 on Dec 11th. It never occured once before 14.1 even though I have been using LRc almost everyday for several weeks. Also the problem "stopped" as soon as I paused the cloud sync (but would start again whenever I resume the sync).
However, having always 12-13 files in the sync queue is not new to me: I noticed this behavior/problem since I installed LRc on the computer I am using right now several weeks ago. Thus, this behavior might not be related to the "time shift" issue.

Is it possible the bug is connected to GMT somehow? I'm in Sweden, which is +1 hour from GMT, and with every change I do to a photo one hour is removed. 
For people living elsewhere, like in the US or Pacific, the timestamp seem to shift even further. 

I'll just stop editing photos until the issue is solved. 

Same problem here. Using Lightroom Classic 14.1 on Macbook Pro 14 and Lightroom Mobile one iPhone. Time changed 1 hour at random files that I edited and that are syned. Hurry up Adobe. I expect there is a fix update coming on monday, 16th dec. This is crucial and not acceptable especially since it persists when i downgraded to Lightroom Classic Version 14.