Chainhook v2: contract_log filter shows blank on re-edit, events intermittently dropped

[Rapha-btc]

Bug Description

When creating/editing a Chainhook v2 via the Hiro Platform dashboard, the contract identifier filter for contract_log events appears blank when revisiting the "Edit Chainhook" page — even though the filter was previously set and the hook is partially working.

Steps to Reproduce

1. Go to Hiro Platform → Chainhooks → Create/Edit
2. Under Smart Contracts, select contract_log
3. Set the contract identifier to a specific contract (e.g. SPV9K21TBFAK4KNRJXF5DFP8N7W46G4V9RCJDC22.pepe-nft-marketplace)
4. Save the chainhook
5. Go back to edit the same chainhook
6. The contract identifier field now shows blank/empty — as if no filter was set

Expected Behavior

The contract identifier should persist and display the previously saved value when editing.

Observed Behavior

• The field appears blank on re-edit, suggesting "Any" contract
• Despite this, the hook does receive some events from the correct contract (we confirmed nft-unlisted events were delivered to our webhook)
• However, other events (nft-listed) from the same contract in the same time window are silently dropped — unclear if related to the blank filter display or a separate delivery issue

Webhook Logs

Our webhook endpoint (/api/chainhook/record-nft-marketplace) shows:

• ✅ nft-unlisted event for token feat: disable rosetta via an ENV var #1804 — delivered successfully (twice, actually)
• ❌ nft-listed event for token fix: warning logger level for RPC proxy errors #1612 (tx 0x31dae8f8..., block #6806114) — never delivered
• ❌ nft-listed event for token chore: update to latest stacks image with epoch2.5 bootup #1924 (tx 0x1294882f..., block #6803517) — never delivered

All three events were emitted by the same contract (SPV9K21TBFAK4KNRJXF5DFP8N7W46G4V9RCJDC22.pepe-nft-marketplace) and confirmed successful on-chain via the Hiro explorer.

Impact

• Cannot verify or confirm the current filter configuration through the dashboard
• Unclear whether the blank display is a UI-only bug or if the filter is actually being reset/corrupted
• Events are being intermittently lost, making it unreliable for production indexing

Environment

• Chainhook v2 API (hosted): api.mainnet.hiro.so/chainhooks/me
• Network: Stacks mainnet
• Hook name: nft-marketplace-pepe
• Contract: SPV9K21TBFAK4KNRJXF5DFP8N7W46G4V9RCJDC22.pepe-nft-marketplace
• Event type: contract_log