Mined UTXOs not included in default Coin Control

[Lemonexe]

Describe the bug
When creating a Send transaction with default Coin Control settings, I cannot send all my funds - mined UTXOs are not included. I have to open manual Coin Control and check the mined UTXOs in order to send them.

Tested only on regtest.

Info:

• Remembered Wallet: no
• Suite Version: web on production, desktop on develop
• OS: Ubuntu 24.04
• Bridge: 2.0.33
• Firmware Version: T2T1, 2.8.1

How to reproduce
Steps to reproduce the behavior:

1. Use trezor-user-env regtest
2. In Suite, create regtest account no. 1
3. Send some amount to the regtest address
4. Mine some blocks at the regtest address
5. Create another regtest account no. 2
6. Open Send from regtest account no. 1
7. Send max
8. See that it is not the full amount! 🐛
   open Coin Control and see that mined UTXOs are not included by default, only received UTXOs are included

Expected behavior
When I don't interact with Coin Control settings, send max should include all UTXOs, including the mined.

Screenshots
In the video I have some regtest UTXOs that were recieved, and some that were mined (those are always 25).
mined_regtest.webm

[MiroslavProchazka]

Check whether you need 100 confirmation of mined UTXO to be able to spend them. If yes, let's close it

[peter-sanderson]

Even if you compose transaction with coin-controll and you try to spend it, you will get

[peter-sanderson]

The root issue is here: packages/utxo-lib/src/coinselect/coinselectUtils.ts:323 (usage of the filterCoinbase function)