[BUG]: settings.theme.background is broken

⚠️ This issue respects the following points: ⚠️

[X] This is a single bug, not a question or a configuration/webserver/proxy issue.
[X] This is not a bug in the browser extension or another client.
[X] This issue is not already reported on Github (I've searched it).
[X] Nextcloud Server and the Passwords App is up to date. See Nextcloud Apps.
[X] There are no warnings and errors reported in the Passwords App settings in the admin area
[X] The following apps are not installed: Rainloop

Server Information

{
    "version": {
        "server": "26.0.0.11",
        "app": "2023.4.20-build4904",
        "lsr": false,
        "php": "8.1.15",
        "cronPhp": "8.1.17"
    },
    "environment": {
        "os": "Linux",
        "architecture": "x86_64",
        "bits": 64,
        "database": "pgsql",
        "cron": "cron",
        "proxy": false,
        "sslProxy": true,
        "subdirectory": false
    },
    "services": {
        "images": "imagick",
        "favicons": "local",
        "previews": "default",
        "security": "hibp",
        "words": "leipzig",
        "previewApi": false,
        "faviconApi": false
    },
    "status": {
        "autoBackupRestored": false
    },
    "settings": {
        "channel": "stable",
        "nightlies": true,
        "handbook": false,
        "performance": 5
    },
    "encryption": {
        "sse": {
            "SSEv1r1": false,
            "SSEv1r2": true,
            "SSEv2r1": false,
            "SSEv3r1": false,
            "none": true,
            "default": "none"
        },
        "cse": {
            "CSEv1r1": true,
            "none": true,
            "default": "CSEv1r1"
        }
    }
}

Client Information

Browser and Version: Chromium 109.0.5414.120 Client OS and Version: Multiple Client: Passwords WebExtension 2.2.6

Bug description

server.theme.background returned by the API is always /apps/theming//img/background/kamil-porembinski-clouds.jpg. This is regardless of if I change the background from server Theming app configuration or via user appearance configuration. Naturally this file does not exist in the WebExtension files so it 404's. The URL does work if my Nextcloud URI is prepended, but it's not actually the currently set image. Previously, the URL was pointing to app-background.jpg as I did not use a custom background as configured from inside Nextcloud (I replaced that file instead), so I don't know what changed.

Steps to reproduce

Change background in Theming app configuration or user appearance configuration
Open Passwords WebExtension popup

Expected behavior

Background is correct

Nextcloud Logs

Nothing related to Theming app or Passwords.

Browser Logs

Just a 404 error for the missing asset. Nothing interesting.

kamil-porembinski-clouds.jpg:1          Failed to load resource: net::ERR_FILE_NOT_FOUND

marius-wieschollek / passwords