Nice find @n2o!
I’m the creator/maintainer of the config sync plugin and I regularly search the Strapi Forums & Discord on the mention of my plugin to find people having issues with it. That how I found this one.
The exclusion you made should be a default exclusion as the data that is stored in that piece of config is environment specific and does not need to be migrated across environments. I’ll make this change and publish it soon.
Thanks for finding this bug 