Thank, you! Updating my Safari I was finally able to replicate the issue. Turns out it is a 3rd party script conflict, partially caused by the outdated version of the color picker. Chrome was still fine, but at least Safari displayed the problem.
I have updated the color picker script and made an issue on the tracker to update it for the upcoming release as well. Clearing up your safary cache, you should start seeing an updated version of the colorpicker, which is a bit different from the old one, it will look like this: https://wp-dreams.com/assets/support/2026-05-29_zg3pK.png
This will no longer revert the colors after saving and everything should load fine.
