Does not show the option/icon on my forum either, unless logged out (guest).
Maybe there needs to be some sort of user preferences change for all forum members for this to work.
Edit: for now, I’ve reinstalled Sidebar Theme Toggle (which it looks like is being used bottom left on this forum as well) but will monitor this topic/plugin.
if you are not seeing the light/dark toggle at the bottom of the sidebar, it likely means you do not have 2 color palettes selected in your preferences - you should have both a light and dark palette selected. if you use a “same as regular” or just one palette, you won’t get the setting.
I wonder what triggers the UI to show the Dark mode dropdown? My theme has two color palettes defined but the user can only select one at a time (see my screenshot in the previous message). I have the latest “tests-passed” version on my site.
I created a separate bug ticket earlier for the issues with the light/dark theme toggle.