Developers are experiencing a bug with Shopify theme extension deep links that use the addAppBlockId parameter to target specific app blocks.
The Problem:
Deep links intended to open a specific app block (e.g., some-player) frequently open the wrong block instead (typically first-player or the first app block in the list)
The issue is intermittent—the correct block opens approximately 2 out of 10 times, despite using identical URLs
The problem can be reproduced by repeatedly entering the same deep link
Technical Details:
Developers are using the correct format: https://store.myshopify.com/admin/themes/current/editor?addAppBlockId=<uuid>/block-handle&target=newAppsSection
Each app block has a unique handle, sharing the same UUID (which aligns with Shopify documentation)
Current Status:
Multiple developers have confirmed experiencing the same issue
Suggested workarounds (checking UUID uniqueness, renaming blocks, reviewing related forum threads) have not resolved the problem
The discussion remains unresolved with no official Shopify response to the bug report
Summarized with AI on October 26.
AI used: claude-sonnet-4-5-20250929.
The problem is that very often that link leads to the first app block in the app list with another name. For example, I want to see the app block some-player, but the first-player app block is opened. But 2 times from 10, the correct some-player app block is opened correctly, and the deep link is the same all the time.
It can be reproduced by just entering the same deep link into the browser repeatedly.