Filament action does not work in toolbar

fullerdb

Hello!

I have added some viewport draw styles tools to the main toolbar so that I could select them with one click instead of two through the viewport dropdown. I hope what I am talking about is clear with the help of the attached images. Texture Shaded and Iray work perfectly. Filament is a dead button. The other buttons highlight yellow when I hover over them and they change the style when I click. Filament's button highlights once after I start DAZ Studio, but it does nothing when I click it and then it will not even highlight again.

I believe I did the same procedure to add all three buttons (by dragging in the panel shown attached), although I added the working buttons first and decided to also add Filament later. I then also tried assigning a shortcut to Filament (ctrl+1), but it does not work either. The shortcuts for the other styles work, but I did not set them; they are assigned by default.

If I select the drop down inside the viewport, all styles work. Including Filament.

Am I missing something? Is this a general bug I should report?

Thank you for any help!