Mail app - how do you move items between folders/archive?

Nextcloud version (eg, 12.0.2): 16.0.4
Operating system and version (eg, Ubuntu 17.04): Centos 7
Apache or nginx version (eg, Apache 2.4.25): Apache 2.4
PHP version (eg, 7.1): 7.3

The issue you are facing:
In the screenshot for the mail app (in the app store), I can see things like Archive and subfoders. Two questions:

  1. When I try to move items between folders, I can’t via Drag and Drop. Is there some other way we’re supposed to move items between folders?
  2. In the aforementioned screenshot, there’s an archive folder. Is there a way to remove/supplement the delete function so that it sends things to archive instead of to trash?

Is this the first time you’ve seen this error? (Y/N): N/A

Steps to replicate it:

  1. Use mail app
  2. Drag and drop a message to a desired folder (move folder) or press the Del button on keyboard (archive)

The output of your Nextcloud log in Admin > Logging:


The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):


The output of your Apache/nginx/system log in /var/log/____: