Tasks: New categories are not saved to backend/shared between instances

[hcderaad]

Steps to reproduce

1. Add a new task and assign a newly created category in one client session (browser)
2. Open another session (private mode/other workstation) try to assign the category created in 1 to a task
3. The instance from 2 will add the category as New.

Expected behaviour

Task categories that are added through one user session should be shared between sessions.

Actual behaviour

See 3.

Server configuration

Operating system: openSUSE Tumbleweed

Web server: Apache

Database: MariaDB

PHP version: 7.2

Nextcloud version: 13.0.4

Updated from an older Nextcloud/ownCloud or fresh install: Since 11ish.

Where did you install Nextcloud from: openSUSE build service RPMs

List of activated apps:
N.A. this only concerns Tasks.

Nextcloud configuration:
N.A. this only concerns Tasks.

Are you using external storage, if yes which one: No

Are you using encryption: No, full disk encryption on volume level.

Are you using an external user-backend, if yes which one: No

LDAP configuration (delete this part if not used)

N.A.

Client configuration

Browser: Firefox / Chrome

Operating system: Windows / Linux.

Logs

Web server error log

No usable log info found regarding unstorable categories.

Nextcloud log (data/nextcloud.log)

No usable log info found regarding unstorable categories.

Browser log

The developer tools show the event being updated in the PUT request with the label and ("Nieuwe categorie" = Dutch) and the new category. The newly added category is not reusable.

[nextcloud-bot]

GitMate.io thinks possibly related issues are #434 (New sharing UI), #1895 (Sharing backend for principals not found /ldap), #6482 (New NC instance, Calendar & Contacts apps broken, no shared Cals nor Cards), #2616 (New Backend in files_external cannot be in another application), and #585 (Unable to generate new share from shared external storage).

[hcderaad]

#434 is completely unrelated, this is a Tasks categories issue, not a filesharing issue.
#1895 is completely unrelated, this is a Tasks categories issue, not a filesharing issue.
#6482 is unrelated, that is an installation issue, this is an issue that occurs during regular usage.
#2616 is completely unrelated, this is a Tasks categories issue, not a filesharing issue.
#585 is completely unrelated, this is a Tasks categories issue, not a filesharing issue.

[MorrisJobke]

This is an issue within the tasks app. Thus please report it to the maintainer of that app in its repository: https://github.com/nextcloud/tasks