WTLOS balance incorrect after withdrawal (unwrap)

[pmjanus]

Describe the bug

When an address withdraws (unwraps) WTLOS, the balance of TLOS is not updated on Teloscan. Additionally, the ERC20 transfer field is empty for the withdrawal transaction, even though it should contain the relevant information.

To Reproduce

Steps to reproduce the behavior:

1. Go to this withdrawal transaction page.

2. Note that the ERC20 transfer field is empty:

3. Click on the address and go to this page to view the address balances. Note the incorrect TLOS balance.

4. Verify the user's WTLOS balance on the WTLOS contract page. Go to the "Read" tab, use the "balanceOf" method, and enter the address 0x1Da699A4fCCdD5Fb02562767C54b720DeC79212f. The balance should be 2000000000000000000.

Expected behavior

• The ERC20 transfer field should contain the relevant information for the WTLOS withdrawal transaction.
• The TLOS balance of the address should be updated on Teloscan after the withdrawal transaction.

Actual behavior

• The ERC20 transfer field is empty for the WTLOS withdrawal transaction.
• The TLOS balance of the address is not updated on Teloscan after the withdrawal transaction.

Screenshots
ERC20 transfer field is empty:

[tomtomcrypto]

moved here: https://github.com/telosnetwork/teloscan-indexer/issues/228

[Viterbo]

@pmjanus

There's a problem with this requirement:

In the withdrawal action, there's no ERC20 transfer at all. So, this is not a bug that that field shows empty. The bug instead is showing the field name when it's empty (but that issue is tracked in #700)

[Viterbo]

https://etherscan.io/tx/0xad065a940f49efb4aca641ddcf4ca208ad54b2ffb21c43741fde5e94fcc48491

[pmjanus]

We want instead to add a transaction action field that states

Transaction Action:

Unwrap 0.2438  WTLOS into 0.2438TLOS