Identical Events (same UID) from different calenders get same colour after clicking them

[gohrner]

Steps to reproduce

Most common scenario:

• Bob shares his calendar read-only with Alice
• Bob creates an event and invites Alice
• Alice accepts the event into her own calendar
• Alice makes Bob's and her own calendar visible in NextCloud

Expected behaviour

• Alice sees Bob's event in his calendar and in her own, each coloured in the corresponding calendar colour.
• This also does not change if one of those two events is single-clicked.

Actual behaviour

• Alice sees Bob's event in his calendar and in her own, each coloured in the corresponding calendar colour.
• If Alice clicks one of both events, both suddenly get the same calendar colour and it cannot be discerned any more which event is from which calendar.

This can be rather confusing.

Server configuration detail

Operating system: Linux 4.9.0-8-amd64 #1 SMP Debian 4.9.130-2 (2018-10-27) x86_64

Webserver: Apache/2.4.25 (Debian) (apache2handler)

Database: mysql 10.1.37

PHP version:

7.0.33-0+deb9u1
Modules loaded: Core, date, libxml, openssl, pcre, zlib, filter, hash, Reflection, SPL, session, standard, apache2handler, mysqlnd, PDO, xml, apcu, apc, bz2, calendar, ctype, curl, dom, mbstring, fileinfo, ftp, gd, gettext, iconv, igbinary, imagick, imap, intl, json, ldap, exif, mcrypt, mysqli, pdo_mysql, Phar, posix, readline, recode, redis, shmop, SimpleXML, sockets, sysvmsg, sysvsem, sysvshm, tokenizer, wddx, xmlreader, xmlwriter, xsl, zip, Zend OPcache

Nextcloud version: 13.0.8 - 13.0.8.2

Updated from an older Nextcloud/ownCloud or fresh install:

Where did you install Nextcloud from: Freash install of 13.0.3, upgrades afterwards.

Signing status

Array
(
)

List of activated apps

Enabled:
 - activity: 2.6.1
 - apporder: 0.6.0
 - bookmarks: 0.12.2
 - calendar: 1.6.1
 - circles: 0.14.3
 - comments: 1.3.0
 - contacts: 2.1.5
 - dav: 1.4.7
 - external: 3.0.4
 - federatedfilesharing: 1.3.1
 - federation: 1.3.0
 - files: 1.8.0
 - files_pdfviewer: 1.2.1
 - files_sharing: 1.5.0
 - files_texteditor: 2.5.1
 - files_trashbin: 1.3.0
 - files_versions: 1.6.0
 - files_videoplayer: 1.2.0
 - firstrunwizard: 2.2.1
 - gallery: 18.0.0
 - impersonate: 1.0.4
 - issuetemplate: 0.4.0
 - ldapcontacts: 1.1.4
 - logreader: 2.0.0
 - lookup_server_connector: 1.1.0
 - mail: 0.8.3
 - nextcloud_announcements: 1.2.0
 - notes: 2.5.1
 - notifications: 2.1.2
 - oauth2: 1.1.1
 - password_policy: 1.3.0
 - polls: 0.8.3
 - provisioning_api: 1.3.0
 - richdocuments: 3.0.5
 - serverinfo: 1.3.0
 - sharebymail: 1.3.0
 - socialsharing_email: 1.0.4
 - spreed: 3.2.6
 - survey_client: 1.1.0
 - systemtags: 1.3.0
 - tasks: 0.9.8
 - theming: 1.4.5
 - twofactor_backupcodes: 1.2.3
 - updatenotification: 1.3.0
 - user_ldap: 1.3.1
 - workflowengine: 1.3.0
Disabled:
 - admin_audit
 - encryption
 - files_external
 - user_external

Configuration (config/config.php)

{
    "passwordsalt": "***REMOVED SENSITIVE VALUE***",
    "secret": "***REMOVED SENSITIVE VALUE***",
    "trusted_domains": [
        "nextcloud.ohrner-it.com"
    ],
    "datadirectory": "***REMOVED SENSITIVE VALUE***",
    "overwrite.cli.url": "https:\/\/nextcloud.ohrner-it.com",
    "htaccess.RewriteBase": "\/",
    "dbtype": "mysql",
    "version": "13.0.8.2",
    "dbname": "***REMOVED SENSITIVE VALUE***",
    "dbhost": "***REMOVED SENSITIVE VALUE***",
    "dbport": "",
    "dbtableprefix": "oc_",
    "mysql.utf8mb4": true,
    "dbuser": "***REMOVED SENSITIVE VALUE***",
    "dbpassword": "***REMOVED SENSITIVE VALUE***",
    "installed": true,
    "instanceid": "***REMOVED SENSITIVE VALUE***",
    "ldapIgnoreNamingRules": false,
    "ldapProviderFactory": "\\OCA\\User_LDAP\\LDAPProviderFactory",
    "mail_from_address": "***REMOVED SENSITIVE VALUE***",
    "mail_smtpmode": "php",
    "mail_smtpauthtype": "LOGIN",
    "mail_domain": "***REMOVED SENSITIVE VALUE***",
    "maintenance": false,
    "theme": "",
    "loglevel": 2,
    "app.mail.accounts.default": {
        "email": "%USERID%@ohrner-it.com",
        "imapHost": "luggage.ohrner.net",
        "imapPort": 993,
        "imapUser": "%USERID%",
        "imapSslMode": "ssl",
        "smtpHost": "luggage.ohrner.net",
        "smtpPort": 465,
        "smtpUser": "%USERID%",
        "smtpSslMode": "ssl"
    },
    "auth.bruteforce.protection.enabled": true,
    "memcache.local": "\\OC\\Memcache\\APCu",
    "memcache.locking": "\\OC\\Memcache\\Redis",
    "redis": {
        "host": "***REMOVED SENSITIVE VALUE***",
        "port": 6379
    },
    "updater.release.channel": "production"
}

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: LDAP

LDAP configuration (delete this par if not used)

(too many sensitive details included)

Client configuration

Browser: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/70.0.3538.110 Chrome/70.0.3538.110 Safari/537.36

Operating system: Debian GNU/Linux 9.6 "Stretch" x64

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[gohrner]

Events before clicking:

Events after clicking:

[georgehrke]

No longer reproducible with Calendar 2.0.
Closing