Link attachment preview image not always loading correctly

[MarinTolic]

Context & proposal

Certain links do not properly load preview images. The attachment possesses the correct Attachment.thumbUrl value which the browser is able to handle, but for some reason COIL starts the request but never completes it.

Confusingly, the same link can indeed load if sent again. Also scrolling up and down can trigger the issue in links that were previously properly loaded.

Acceptance criteria

To accept this task we need to complete the following items:

• [ ] Investigate the issue and report your findings.
• [ ] Fix the issue.