Hi team @roger , we still find it buggy while updating alt text in different locale in posts/products. For example, when I start from scratch(no alt text set for any languages), and switch to German, uncheck bottom toggle, set alt text as ‘aaa’, it overwites alt text for all languages as ‘aaa’.
The behavior you have shown is expected: if the field is NOT localized (like in this case), and you change the alt text directly on the field, that alt text is not localized, so it shows on every locale tab