P: Problem when using copy and paste or sync in develop module with WB changed

When I use "Previous" function and/or "Copy/Paste Settings" to apply settings across a group of selected images for uniformity, all the settings are not pasted or moved over to the group. Specifically, what I notice most obviously is the white balance. In the panel, the title of the white balance might say "Shady" as it should be, but the temperature value still reads "5500" and it is unchanged in the image. I have to preform another two clicks, one to change the temp, then one to reselect the "Shady" option to actually make the proper change. 
How many more of my setting aren't being transferred over?? This is costing me time on hundreds of images per session I edit.

While waiting for this bug to be fixed, here all the ways I successfully set multiple selected photos to WB: Daylight (tested with multiple D850 raws set to Camera Standard, LR 10.0, Mac OS 10.15.7):

Develop, Auto Sync:
1. Go to Develop.
2. Turn on Auto Sync by clicking the toggle to the left of the Sync bottom in the lower-right corner.
3. Change WB to Daylight.
4. Turn off Auto Sync.

Develop, right-click copy/paste: (retested 11/28)
1. Go to Develop.
2. Change WB to Daylight.
3. Right-click the filmstrip thumbnail and do Develop Settings > Copy Settings; check White Balance.
4. Right-click the thumbnail and do Develop Settings > Paste Settings.

Library Grid view, Quick Develop:
1. Go to Library grid view (type "g"; not Loupe view)
2. In the Quick Develop panel, change White Balance to Daylight.

Library Loupe view, Quick Develop
1. Go to Library Loupe view (type "e")
2. Turn on Auto Sync by clicking the toggle to the left of the Sync button in the lower-right corner.
3. In the Quick Develop panel, change White Balance to Daylight.
4. Turn off Auto Sync.

Library Loupe and Grid view, with the first photo's WB already set to Daylight, right-click copy/paste: (retested 11/28)
1. Go to Library Loupe or Grid view.
2. Right-click the first photo's filmstrip thumbnail and do Develop Settings > Copy Settings; check White Balance.
3. Right-click the thumbnail and do Develop Settings > Paste Settings.

This thread is being merged into an authoritative thread for better tracking and response. 

Copy/paste WB is a known bug and fixed for next release.

In addition to the fuzziness of the Library module when zoomed in, I have found another 'quirk' of Lightroom Classic v10.  It goes like this: create virtual copy of RAW file, make adjustments on the virtual copy that are different from the original's settings, including white balance, then copy all settings, go back to original RAW file and paste settings.  

When I tried this (since I often try and compare different settings on the same photo) according to the tools tab, the white balance had copied across, but visually it was obvious that it had not, regardless of whether I view it in Library or Develop.  I tried this in both directions - original to virtual copy and vice versa.  Exactly the same result, and it didn't make any difference whether I reset the photo that I was pasting to or just pasted over the settings that it already had.  Again, the results were the same in both directions (virtual to original or original to virtual).  I have never had this problem before LRC V10.  

The histogram sometimes looked different between copied and pasted versions as well, despite the fact they were the same RAW photo now supposedly with the same develop settings, so there may have been other things that claimed to have copied across when they had not.  As with the blurriness in the Library module that I have mentioned in a separate post, reverting back to v9.4 has cured this lunacy.  So, I now have a few photos to reprocess, but better that than carry on with the mess that v10 seems to be.  

I can see online that people are having various other problems with v10. This is just an unacceptable mess that Adobe really need to sort out quickly.  I am currently regretting not giving my trial version of Capture One a more thorough test run before deleting it.

Well I am glad I came here.  I thought I was going crazy for the last month.  This is happening to me as well.  VERY frustrating and is slowing my work flow.  I'm on Mac OS version 10.15.7 (19H15) and LR 10.0

I feel your pain ... I am retired but I still know time = money.

@Ken Miracle Yep, I use the same work around. It slows my efficiency when editing hundreds of images.

Note that if you use Quick Panel to change WB to Daylight while in Library Loupe view, only the current photo gets changed. (That's a general property of Loupe view.) You either have to be in Grid view or use the Auto Sync toggle.

To narrow down the issue, here all the ways I successfully set multiple selected photos to WB: Daylight (tested with multiple D850 raws set to Camera Standard, LR 10.0, Mac OS 10.15.7):

Develop, Auto Sync:
1. Go to Develop.
2. Turn on Auto Sync by clicking the toggle to the left of the Sync bottom in the lower-right corner.
3. Change WB to Daylight.
4. Turn off Auto Sync.

Develop, right-click copy/paste:
1. Go to Develop.
2. Change WB to Daylight.
3. Right-click the filmstrip thumbnail and do Develop Settings > Copy Settings; check White Balance.
4. Right-click the thumbnail and do Develop Settings > Paste Settings.

Library Grid view, Quick Develop:
1. Go to Library grid view (type "g"; not Loupe view)
2. In the Quick Develop panel, change White Balance to Daylight.

Library Loupe view, Quick Develop
1. Go to Library Loupe view (type "e")
2. Turn on Auto Sync by clicking the toggle to the left of the Sync button in the lower-right corner.
3. In the Quick Develop panel, change White Balance to Daylight.
4. Turn off Auto Sync.

Library Loupe and Grid view, with the first photo's WB already set to Daylight, right-click copy/paste:
1. Go to Library Loupe or Grid view.
2. Right-click the first photo's filmstrip thumbnail and do Develop Settings > Copy Settings; check White Balance.
3. Right-click the thumbnail and do Develop Settings > Paste Settings.

@Stewart Ross ... it is frustrating ...  the "work around" I am using is simple ... for example I click on the desired adobe wb preset and then just move it by 1 ie. for daylight change it to 5501 and then it sync's or copies as normal. Still would prefer to have it fixed sooner rather than later.