to specify…
what happens, is that the slider remains in one language, until I open the static page set as home page in the other language and chose the slider picture category from a dropdown menu (it only gives me All categories and the language specific category that I put the pictures of that language in). Once I chose the category, it works fine, but not anyomore in the other language, where it reverts back to all categories, e.g. it syncs that setting.
I have a similar issue with a custom field in another section, but there its not so sensitive because I could unpair the entries and avoid the problem (not so elegant, but working). Is there a way to just turn off all these syncs (i found the code you posted to disable the featured image sync, but that doesnt do the trick)
Cheers,
Valentin