BUG: Moved asset only appears in target collection after reload

[lorenzulrich]

Description

If an asset is "moved" from one collection to another, it is not visible in the target collection without a reload of the module.

Steps to Reproduce

1. Create at least two collections A (first level) and B (second level).
2. Upload file to collection B.
3. Click file in collection B and select collection A as "Collection".

Expected behavior

• The file disappears from the view as I moved it to collection A.
• When I open Collection A, I see the file.

Actual behavior

• ✔️ The file disappears from the view as I moved it to collection A.
• 🐛 When I open Collection A, I don't see the file. As soon as I refresh the page, it shows up.

This only happens when moving a file up in the hierarchy, in my case from collection B to A. Moving from A to B works flawlessly.

Affected Versions

Neos: 8.3
UI: 8.3.4
Media Module: 0.13

[lorenzulrich]

It also seems that the state of the footer is not properly updated. It still shows "1 assets" and the pagination:

[Sebobo]

In theory I have all necessary cache flushes in place. It might be the assets list of the parent is still cached and I need to flush it separately. Will need further investigation.

[Sebobo]

This bug is really a bit annoying as it doesn't happen every time. Some timing issue when the various instances and caches are being updated.

[Sebobo]

1.3.0 includes a partial fix. But there are still some cases in which it doesn't reliably work. Like a 50/50% chance when reassigning an asset.