I tried adding the theme selector to my instance but it doesn’t show up, I’ve updated, disabled it and re-added it, cleared cf cache, rebuilt instance. First one I added was dark mode switcher, worked for a few days then Idr what I did then it stopped working, I remember this being a thing some year…

Have you tried using it with different themes? What theme are you using?

Are you using this TC? [image] Sidebar Theme Toggle Theme component discourse2 Summary Sidebar Theme Toggle adds a theme selector in the sidebar menu’s footer provided there is more than 1 user selectable theme. This selector works with both logged-on us…

Can you check if the theme component is attached to your theme? Also, do you see any error in the browser’s console?

A few things to check. First I’d make sure that Discourse and the theme component are up to date. I would then try using the preview button at the bottom of the theme component’s setting page — this will show the theme component in isolation. If the preview works, there’s likely a conflict with an…

Turns out it was me. I didn’t add another theme to the site, I assumed color pallets were “another theme of my default theme”, but still doesn’t explain why the dark mode switcher stopped working. Yes I did everything correctly.

Turns out I didn’t do this! I feel so stupid

Theme components issue

Support

Genisis April 28, 2024, 12:23pm 3

That’s correct, even tried this tc and it worked for a dew days and I think I disabled it to try the theme selector and it stopped working when I enabled it back

Topic		Replies	Views
Sidebar Theme Toggle Theme component official , sidebar , sidebar-theme-toggle	32	10036	June 26, 2026
Can not find the light/dark theme toggle when sidebar enabled Support	3	787	November 18, 2022
Discourse theme selection doesn't work after update to 2.9.0beta1 Support	1	397	September 16, 2024
Hamburger Theme Selector Theme component end-of-life	69	24085	May 30, 2023
Dark/light mode toggle now available in core Announcements	27	2553	March 17, 2025

Theme components issue

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