'update_languages' capability is not promped to admins

[wdfee]

since 4.9 my admin user is not able to update language files anymore, no information about available language updates is shown. (But is shown in the number of available updates in admin bar and menu.)

When I change in /wp-admin/update-core.php line 630 to

if ( current_user_can( 'update_languages' ) || current_user_can( 'manage_options' ) ) {

and line 746 to

if ( ! current_user_can( 'update_languages' ) && ! current_user_can( 'manage_options' ) ) {

it works again.
So it seems somewhere the capability failed to be added to the admin.

[Presskopp]

@flixos90 Can you have a look?

[Presskopp]

related #42697

[dd32]

Marking this as a duplicate of #42697 - you should have the update_languages cap, but it sounds like the calculation of the capability isn't correct, as per #42697