Issue: Uploaded Image URL Becomes Invalid After Updating Message with Select Block

[martirook]

@slack/web-api version

7.7.0

Node.js runtime version

v20.18.0

Steps to reproduce:

1. Upload multiple image blobs using the files.uploadV2 API and retrieve their permalink values.
2. Use these permalinks as value options in a static_select block.
3. Send an initial message that includes:

• A select block with the uploaded image URLs as options.
• An image block showing the first uploaded image.

4. Handle the selection action:

• Update the message by replacing the image block with the URL of the selected option using chat.update.

5. Observe the updated message.

Expected result:

• The first message shows the first image correctly.
• When a user selects a new option, the message updates to display the new image from the static_select block.

Actual result:

• The first message shows the first image correctly.
• After selecting a new image, the chat.update call fails to display the updated image. The image_url (permalink from files.upload) becomes invalid., but the shown size is correct.

[martirook]

Additional Observation
When using chat.postMessage instead of chat.update, the provided image_url (permalink from files.upload) works as expected, and the image is displayed correctly.

[WilliamBergamin]

Hi @martirook thanks for writing in 💯

I was able to reproduce this behavior a placed my test script and results in this GIST

This seems to be a server side issue, I will raise it internally, but you can also use the /feedback command in slack to raise your concern