When you send a transaction from one wallet to another, the wallet that is receiving coins will have them under Pending until the transaction is confirmed on the blockchain. (which is all fine)

However, let's say you have 1 UTXO (1000 PIV) in the wallet and you want to put them for Cold Staking.
As the Owner Address you put the same address where the coins are currently standing and you use some outside Cold Staking address.

The moment when you confirm delegation and until the transaction is confirmed on the blockchain, your wallet will show that you have 0 Available, 0 Pending and 0 Immature coins. The coins should be showing as Pending until the transaction is confirmed on blockchain.