According to the documentation in https://tiddlywiki.com/#ButtonWidget, the `selectedClass` parameter is assigned "if the popup is triggered or *the tiddler specified in set already has the value specified in setTo*"
However, in your `$button` code, the `setTo` parameter is calculated using a filtered transclusion whose value will always be the *opposite* of the current value stored in the `$:/state/petri/sidebar3` tiddler. Thus, the `selectedClass` is never applied. Are you certain that this used to work "a few weeks back"? -e -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to tiddlywiki+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/c7c4d748-6af6-4435-84e5-4de3c4024355n%40googlegroups.com.
