Do you run your Sparrow wallet with full node or you are using some electrum server, and do you use it as single or multisig?

Note that Taproot is still in early stages and I wouldn't suggest using it now if you are a normal user, it could be some bug that you could report to Sparrow github page.

You can also try other wallets that support Taproot:

• Bitcoin Core ^{(manual import)}
• Specter wallet
• Fully Noded
• Muun wallet
• Ledger ^{(v2.35+ experimental)}