Elements-qt forces the asset to L-BTC when clicking "Use Available balance"

[andreabonel]

When we try to send an asset other than L-BTC and we click on Use available balance, the selected asset is forced to be L-BTC.

Example:

My current balance is:

I want to send my total available balance of asset 160d16ed964e65405d654427f141349847b238cbba34ccd78e09cd47e5dd0a94 (0.00000001).

I select asset 160d16ed964e65405d654427f141349847b238cbba34ccd78e09cd47e5dd0a94

When I click Use Available balance, I'd expect "Amount" to be autocompleted with the total available balance of the current selected asset (0.00000001)
But instead, the asset is forced to L-BTC (the "Amount" is coherent with the available L-BTC amount (0.00228895)).

I'm using Elements v22.1.0rc1.