[stable20] Custom Background image of login screen for shared files is tiled. Standard login screen is ok

[JSoko]

Steps to reproduce

When I´m using a custom background image that has been defined via web GUI “Settings --> Theming --> Login Image” the login screen looks fine for the default login page.

But when it comes to an password protected shared file link, the image of the login screen will be displayed in tiles. Until now I didn´t found a solution to get rid of this issue.

Expected behaviour

The picture shuldn't be shown tiled

Actual behaviour

The picture ist shown tiled
see also https://help.nextcloud.com/t/nc-20-custom-background-image-of-login-screen-is-tiled-for-shared-file-links/98838

Server configuration detail

Operating system: Linux 5.4.0-53-generic #59-Ubuntu SMP Wed Oct 21 09:38:44 UTC 2020 x86_64

Webserver: Apache/2.4.41 (Ubuntu) (apache2handler)

Database: mysql 10.2.16

PHP version:

7.4.8
Modules loaded: Core, date, libxml, openssl, pcre, zlib, filter, hash, Reflection, SPL, session, standard, sodium, apache2handler, mysqlnd, PDO, xml, apcu, bcmath, bz2, calendar, ctype, curl, dom, mbstring, FFI, fileinfo, ftp, gd, gettext, gmp, iconv, igbinary, imagick, imap, intl, json, exif, mysqli, pdo_mysql, apc, posix, readline, redis, shmop, SimpleXML, smbclient, soap, sockets, sysvmsg, sysvsem, sysvshm, tokenizer, xmlreader, xmlrpc, xmlwriter, xsl, zip, Phar, libsmbclient, Zend OPcache

Nextcloud version: 20.0.2 - 20.0.2.2

Updated from an older Nextcloud/ownCloud or fresh install: updated

Where did you install Nextcloud from: necxtcloud.com

Signing status

Array
(
)

List of activated apps

Enabled:
 - activity: 2.13.3
 - admin_audit: 1.10.0
 - announcementcenter: 4.0.0
 - apporder: 0.11.0
 - audioplayer: 3.0.0
 - bookmarks: 4.0.5
 - calendar: 2.1.2
 - cloud_federation_api: 1.3.0
 - comments: 1.10.0
 - contacts: 3.4.2
 - contactsinteraction: 1.1.0
 - data_request: 1.7.0
 - dav: 1.16.1
 - deck: 1.2.1
 - event_update_notification: 1.1.0
 - external: 3.7.1
 - federatedfilesharing: 1.10.1
 - federation: 1.10.1
 - files: 1.15.0
 - files_downloadactivity: 1.9.0
 - files_linkeditor: 1.1.2
 - files_markdown: 2.3.1
 - files_pdfviewer: 2.0.1
 - files_readmemd: 1.2.0
 - files_rightclick: 0.17.0
 - files_sharing: 1.12.0
 - files_texteditor: 2.14.0
 - files_trashbin: 1.10.1
 - files_versions: 1.13.0
 - files_videoplayer: 1.9.0
 - forms: 2.0.4
 - guests: 1.6.1
 - impersonate: 1.7.0
 - issuetemplate: 0.7.0
 - logreader: 2.5.0
 - lookup_server_connector: 1.8.0
 - news: 15.0.6
 - nextbackup: 20.9.0
 - nextcloud_announcements: 1.9.0
 - notes: 4.0.0
 - notifications: 2.8.0
 - oauth2: 1.8.0
 - ocsms: 2.1.8
 - password_policy: 1.10.1
 - photos: 1.2.0
 - piwik: 0.7.0
 - polls: 1.6.2
 - previewgenerator: 3.0.1
 - privacy: 1.4.0
 - provisioning_api: 1.10.0
 - quota_warning: 1.9.1
 - recommendations: 0.8.0
 - serverinfo: 1.10.0
 - settings: 1.2.0
 - sharebymail: 1.10.0
 - spreed: 10.0.3
 - support: 1.3.0
 - suspicious_login: 3.2.1
 - systemtags: 1.10.0
 - tasks: 0.13.6
 - text: 3.1.0
 - theming: 1.11.0
 - twofactor_backupcodes: 1.9.0
 - updatenotification: 1.10.0
 - user_usage_report: 1.4.2
 - viewer: 1.4.0
 - w2g2: 3.0.3
 - workflowengine: 2.2.0
Disabled:
 - accessibility
 - analytics
 - appointments
 - cms_pico
 - dashboard
 - drop_account
 - encryption
 - files_accesscontrol
 - files_external
 - files_trackdownloads
 - firstrunwizard
 - gpxedit
 - gpxmotion
 - gpxpod
 - phonetrack
 - quickaccesssorting
 - ransomware_detection
 - richdocuments
 - socialsharing_email
 - survey_client
 - telephoneprovider
 - timemanager
 - user_external
 - user_ldap
 - user_status
 - weather_status

Configuration (config/config.php)

{
    "loglevel": 0,
    "maintenance": false,
    "theme": "",
    "integrity.check.disabled": false,
    "overwrite.cli.url": "https:\/\/of99.net\/",
    "default_language": "de_DE",
    "passwordsalt": "***REMOVED SENSITIVE VALUE***",
    "logtimezone": "Europe\/Berlin",
    "simpleSignUpLink.shown": false,
    "secret": "***REMOVED SENSITIVE VALUE***",
    "log_rotate_size": "10485760",
    "activity_expire_days": 33,
    "trusted_domains": [
        "localhost.localdomain",
        "192.168.1.234",
        "***.net",
        "office.***.net",
        "localhost"
    ],
    "htaccess.RewriteBase": "\/",
    "trashbin_retention_obligation": "auto, 10",
    "versions_retention_obligation": "auto, 21",
    "datadirectory": "***REMOVED SENSITIVE VALUE***",
    "preview_max_x": 1000,
    "preview_max_y": 1000,
    "preview_max_scale_factor": 10,
    "dbtype": "mysql",
    "version": "20.0.2.2",
    "dbname": "***REMOVED SENSITIVE VALUE***",
    "dbhost": "***REMOVED SENSITIVE VALUE***",
    "dbport": "",
    "dbtableprefix": "oc_",
    "mysql.utf8mb4": true,
    "dbuser": "***REMOVED SENSITIVE VALUE***",
    "dbpassword": "***REMOVED SENSITIVE VALUE***",
    "installed": true,
    "mail_smtpmode": "smtp",
    "memcache.local": "\\OC\\Memcache\\Redis",
    "filelocking.enabled": true,
    "memcache.distributed": "\\OC\\Memcache\\Redis",
    "memcache.locking": "\\OC\\Memcache\\Redis",
    "redis": {
        "host": "***REMOVED SENSITIVE VALUE***",
        "port": 0,
        "timeout": 0,
        "dbindex": 0,
        "password": "***REMOVED SENSITIVE VALUE***"
    },
    "updater.release.channel": "stable",
    "mail_from_address": "***REMOVED SENSITIVE VALUE***",
    "mail_smtpauthtype": "LOGIN",
    "mail_domain": "***REMOVED SENSITIVE VALUE***",
    "mail_smtpauth": 1,
    "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
    "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
    "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
    "mail_smtpsecure": "tls",
    "instanceid": "***REMOVED SENSITIVE VALUE***",
    "app_install_overwrite": [
        "tasks",
        "w2g2",
        "apporder",
        "piwik",
        "ownbackup",
        "radio",
        "carnet",
        "theming",
        "workin2gether",
        "files_linkeditor",
        "socialsharing_email",
        "files_readmemd",
        "spreed",
        "telephoneprovider",
        "drop_account",
        "issuetemplate",
        "polls",
        "ocsms",
        "quickaccesssorting",
        "cms_pico",
        "ransomware_detection",
        "impersonate",
        "gpxmotion",
        "gpxedit",
        "sharerenamer",
        "uploaddetails",
        "external",
        "files_downloadactivity",
        "user_usage_report",
        "files_trackdownloads",
        "audioplayer"
    ],
    "has_rebuilt_cache": true,
    "mail_sendmailmode": "smtp",
    "mail_smtpport": "587"
}

Are you using external storage, if yes which one: none

Are you using encryption:

Are you using an external user-backend, if yes which one: none

Client configuration

Browser: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.66 Safari/537.36

Operating system: Ubuntu 20.04.1 LTS

[kesselb]

Duplicate of #24200