Major bug or am i overlooking something

there is an offer where you can buy 5 star storm

didnt buy it yet but it will allow me to add covers to her i get xp but dont see where the covers are going to

found it going to the 1 star i already got working on

Yes, directing covers among dupes was already a little confusing before ascension and is much worse now.

You should be able to go to 5* variant of storm and add champ levels manually, even if the expiring cover page defaults to applying them to the 1* variant.

Since the ascending is possible, I no longer press Train button on covers. I go to roster, go to filter and choose first option. It filters characters which can be raised using covers or shards. And if there are more copies of the same character, I can choose to which one I give my cover. It’s a bit more clicks to apply all, but I’m more in control what happens (where covers go). Before ascending option I used this filter only to aply shards for levels.

To add to that, you can also filter on ‘ascended’