WSoD with “View from user's perspective” while in Maintenance mode

Technical assistance
#1

Infos:

  • Used Zammad version: zammad/unknown,now 5.1.0-1647422911.dbbd3095.bullseye amd64
  • Used Zammad installation type: apt
  • Operating system: Debian 11
  • Browser + version: Firefox 98

White screen of death with “View from user’s perspective” while in Maintenance mode

Expected behavior:

  • a visible error message + the option to go back
  • or – super fancy – the app would work despite Maintenance mode

Actual behavior:

  • White screen of death
  • Hidden HTTP error 403 on the background POST /api/v1/signshow request

Steps to reproduce the behavior:

  • Enable Maintenance mode
  • Go for some user (an agent in my case), right click and…
  • View from user’s perspective
#2

I’m afraid this is not possible as of because how Zammad functions in said situation.
The maintenance mode forbids all sessions that are not from administrators. When taking over a user, in that specific situation, your session does not come with administrative permissions.

You can workaround this by clearing your cookies or disabling the maintenance mode.
I honestly am not sure if we should thread this as a bug, it’s kinda edgy.

#3

I can’t really make recommendations on handling this development wise.
All I can say is that such a WSoD is quite annoying (to handle user-wise).

#4

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