Controls do not respond to clicks

[nref]

This could be user error.

I followed the instructions in the README to add ThemeManager to my Blazor 8.0 app. The cog and bar appear on the right, but they do not respond to clicks.

If I scroll horizontally manually to bring the sidebar into view and click on a color, a color picker does not appear. (I only assume that was the intent.)

I do have the Providers in MainLayout.

<MudPopoverProvider/>
<MudDialogProvider />

I tried to teach myself do it right with the test app, but it does not start: https://github.com/MudBlazor/ThemeManager/issues/26