White balance EXIF camera setting not shown anymore in EXIF metadata in version 10.3

And, review your plug-ins. Any missing? Any disabled?

Please post your System Information as Lightroom Classic (LrC) reports it. In LrC click on Help, then System Info, then Copy. Paste that information into a reply. Please present all information from first line down to and including Plug-in Info. Info after Plug-in info can be cut as that is just so much dead space to us non-Techs.

Especially interested in Plug-ins

I used it the check the camera set White balance in the Library TAB

In Libray Module, that can be accomplished up top right, in Quick Devvelop.

I checked LrC 9.4 and 5.7.1 and there is no entry for White Balance showing with Canon 6D CR2 and JPG files. What version of Lightroom did you use for that screenshot?

In your screenshot the Software Used entry shows the file was edited in Photoshop CS5 for Windows. That may be where the additonal camera metadata entires were added. I opened a Canon EOS 6D CR2 file using PS 22.4.1 and saved to TIF file format, which also doesn't have an entry for White Balance. Perhaps it was something unqiue to the earlier PS CS versions.

Yes, where is that screenshot from? In my copy, Keywords is not just above Metadata, Keyword Lis is (unless you turn displaying Keyword List off) , and it is called Keywording.

Are you still using the same camera?

White Balance settings were never visible in the Lightroom Library module Metadata panel. They are visible at the top of the Develop panel's Basic module when shooting raw file format using the 'As Shot' WB settings selection.