BUG: Incorrect display when using the companion viewer module

[johnhenley]

Describe the bug

Incorrect layout when using the companion "Viewer" module.

Software Versions

• DNN: 09.12.00
• Module: 08.00.01

To Reproduce

Steps to reproduce the behavior:

1. Install forums on one tab
2. Install viewer on second tab, and configure
3. Forums will then display incorrectly

Screenshots

[Timo-Breumelhof]

That is weird...

[johnhenley]

That is weird...

I assume I broke it in 8.0 with caching updates for toolbar but need to verify. I need to add viewer to release testing checklist :)