Creating a Quote from Accounts doesn´t link anything

If a strange behaviour, but i am not sure how to fix it.

I am on an Account. There are two Subpanels "Quote (Bill to)" and "Qoute (Ship to)".

Every other [+] on the other Subpanels opens the "Overlay" and links the account together.

On the "Quotes" [+] it jumps to "/#Quotes/create"

On this page there is a Select Account dropdown as a mandatory field.

It´s an installation i make the support and i am not sure if some future developer made something crazy or if it works currently as designed.

What i would achive is:

Click [+] on the Account Subpanel "Quote (Bill to)" and the current selected Account is used as default "BILLING_ACCOUNT".

Any ideas or suggestions?

There is no vardefs Overwrite so far as i  can see.

Any help appreciated.