Missing fingerprints in multisig wallets

[sad-error]

When adding cosigners through xpubs/Zpubs this results in missing fingerprints in the wallet - some hw wallets (coldcard for one) seem to require the fingerprint in order to decide if they are involved in the psbt. The only way to solve this that I could find is go into the raw wallet json and fix the

"root_fingerprint": null

I think it would be useful to have a fingerprint input field along side the xpub/zpub when adding cosigners.

[SomberNight]

~duplicate: #5715
related: #5715 (comment)

there is a workaround here: #5715 (comment)
(still cumbersome but preferred over modifying the wallet file by hand)

I will close this issue in favour of that one - though I admit your description is easier to understand than digesting that whole thread.

I am working on #5694 now, I imagine at a later stage of that work I will have to revisit this issue.