Single File user shares preview broke and download action missing

[micbar]

Describe the bug

1. Share A single file with user einstein
2. Log in as einstein
3. Browse to the shares page (No thumbnail expected for "pending" shares
4. Accept the share

Expected behavior

See a single file in the lis with preview image and download action

Actual behavior

• No dowload action
• Preview is broken

Screenshot

Setup

https://ocis.ocis-traefik.released.owncloud.works/ ocis version 2.0.0-beta1

Additional context

Add any other context about the problem here.

[micbar]

@kulmann FYI

[kulmann]

Download action for single files and for folders will become available in web with owncloud/web#6936
But single file shares result in download being the filename of the downloaded file

[micbar]

@kulmann my observations are interesting.

1. The thumbnails work if you append the Filename to the ID in the webDAV URL

2. Where does web get the filename for the download? From the HEAD request?

[micbar]

found 2) out thanks to @fschade

It was the content disposition header. Was fixed already in reva edge cs3org/reva#2855

1. fix PR is ready fix thumbnails for empty trailing paths #3791