View E2E Encrypted File Uploaded From Desktop on iOS Client Resulted in seeing extra hash string appended to it

[shubymao]

Steps to reproduce

1. Ensure E2E encryption is enabled on both iOS and desktop client.
2. Create a new text file in e2e encrypted folder on desktop client.
3. Edit the file and add some string to the text file (ex. hello world)
4. View the file content in preview within the iOS client

Expected behaviour

• See exact same string as you enter in step 3. (i.e hello world)

Actual behaviour

• On the iOS device, we see the original message along with some extra hash like characters when preview or download the file. I presume there might be some inconsistency in the way the file is decrypted on iOS Client vs encrypted on Desktop

Screenshots

What file looks like on desktop client.

What I see on iOS device.

Logs

If applicable, you can post the iOS app or server logs (removing any sensitive information).

Reasoning or why should it be changed/implemented?

Data consistency is core to any storage service. If the app can't maintain good consistent on the e2ee file then this doesn't provide the user with confidence to use this feature.

Environment data

Nextcloud Desktop Version Nextcloud Window 3.8.1

Windows Version 10

iOS version: IPadOS 15.5.

Nextcloud iOS app version: see More > Settings NextCloud Liquid iOS 4.8.0.5

Server operating system: TrueNas (Debian, Linux)

Nextcloud version: 26.0.1

[uselpa]

Came here to confirm. I don't know if it's a hash or anything else, but there's some kind of "garbage" shown by the iOS client. First E2E activation, macOS desktop client 3.13.2, Nextcloud server 29.0.3 (docker), iOS client 5.4.1.0.

[executed]

looks like line ending character thing to me