Localize / Synchronize buttons are missing for Text & media assets
Tested with current master (9.2.0-dev).
If some "assets" are inserted into "Text & media" and translated (translate, not copy) and the elements in the original language are changed (order changed, new ones inserted etc.), I would expect the buttons "Localize all records" / "Synchronize with original language" to be displayed for the translation.
This does work with bootstrap carousel from bootstrap_package, but not with Text & Media.
May be missing TCA options 'showSynchronizationLink' and 'showAllLocalizationLink'?