While trying to secure a Parathread (to start a Parachain Auction) using the Polkadot.js we found a UI bug which meant the reserve amount was incorrect, which cost us 408.45 DOT in fees.

ParaID 3376
Controller Account
1xGrVAzbHfUfxFMRhUsDKWFcJNf1XMSNE2UqRjkYyFhrnqt

2024-05-30 13:56:24 (+UTC)


136.1501892767 DOT

0x3cf6660a1c8b471d0841a53d8261d34d8f96be57e64891eee2c8b0b8c9f4f001

2024-05-30 14:08:30 (+UTC)


136.1501892767 DOT

0xf6fcb1c2a75f4d7029bfe5619a79c177545b33272be83c12a5443811fe54f09a

2024-05-30 14:55:24 (+UTC)


136.1501892767 DOT

0xf64028ab688a24b660230eb1f112e743543d22086c7625da86278e358b3b06ec


### Summary of Polkadot.js Parathread Issue

- **Issue**: A UI bug in Polkadot.js caused an incorrect reserve amount during a Parachain Auction attempt.
- **Cost**: This bug resulted in a loss of 408.45 DOT in fees.
- **ParaID**: The affected Parathread had an ID of 3376.
- **Controller Account**: The account used was 1xGrVAzbHfUfxFMRhUsDKWFcJNf1XMSNE2UqRjkYyFhrnqt.
- **Transactions**: Three transactions were made on 2024-05-30, each for 136.1501892767 DOT.
- **Transaction Hashes**: 
  1. 0x3cf6660a1c8b471d0841a53d8261d34d8f96be57e64891eee2c8b0b8c9f4f001
  2. 0xf6fcb1c2a75f4d7029bfe5619a79c177545b33272be83c12a5443811fe54f09a
  3. 0xf64028ab688a24b660230eb1f112e743543d22086c7625da86278e358b3b06ec
- **Time**: The transactions occurred at 13:56:24, 14:08:30, and 14:55:24 UTC.

amount

beneficiary

Executed

Submitted

DecisionStarted

DecisionDepositPlaced

ConfirmStarted

Confirmed

big_tipper

WHO: Not specified
WHAT: Report a UI bug in Polkadot.js that caused incorrect reserve amount and cost 408.45 DOT in fees while securing a Parathread for ParaID 3376.
PRICE/TIMEFRAME/RESOURCES: Not specified.

Polkadot.js UI Bug When Initiating A Parathread for Parachain Auction

root

whitelisted_caller

wish_for_change

staking_admin

treasurer

lease_admin

fellowship_admin

general_admin

auction_admin

referendum_canceller

referendum_killer

small_tipper

small_spender

medium_spender

big_spender

Origin able to dispatch a whitelisted call.

Origin for signaling that the network wishes for some change

Origin able to cancel slashes and manage minimum commission.

Origin for spending up to 10,000,000 DOT from the treasury as well as generally administering it.

Origin for managing the composition of the fellowship.

Origin able to spend around 250 DOT from the treasury at once.

Origin able to spend around 1,000 DOT from the treasury at once.

Origin able to spend around 10,000 DOT from the treasury at once.

Origin able to spend around 100,000 DOT from the treasury at once.

Origin able to spend up to 1,000,000 DOT from the treasury at once.