Not sure what you mean by your temporary solution.
If you knew you had an issue why didn’t you just say so, I could have saved myself a lot of time.
Ok. It looks like I have to make to 2 changes/saves in the Customizer before I can see any changes on the website.
It is applying the previously saved changes but not the currently saved changes.
It’s not a live site, only local at this point.
I can send you screenshots.
I appreciate that you have attempted to fix this issue, but it is still not working. I have tested with the latest update on a completly fresh install with no additional plugins active except the ones provided by your theme.