I have a PDF with an embedded Table of Contents. Okular Desktop shows the table of contents, but in Okular Active, the "Table of Contents" tab in the drawer is still greyed out.

Reproducible: Always

Steps to Reproduce:
1. Download http://www.gastonsanchez.com/PLS_Path_Modeling_with_R.pdf
2. Open it in Okular Active
3. Open the Drawer
4. Scroll down to reveal the tab bar
Actual Results:  
Table of Contents is grweyed out

Expected Results:  
It should become active since a TOC is there

If TOC does not work in general, the tab should be removed for now to avoid confusion ("Why isn't this activated?")