- Go to https://de.wikipedia.beta.wmflabs.org/wiki/Spezial:Einstellungen#mw-prefsection-betafeatures, enable advanced search.
- Go to https://de.wikipedia.beta.wmflabs.org/w/index.php?search=&title=Spezial%3ASuche&go=Artikel
Expected: Namespace filter is shown.
Actual: Namespace filter is missing, error console shows an error "Too much recursion", with a stack trace that looks line an infinite loop of
OO.ui.mixin.GroupElement.prototype.addItems OO.ui.TagMultiselectWidget.prototype.onTagDisabled oo.EventEmitter.prototype.emit oo.EventEmitter.prototype.emit OO.ui.TagItemWidget.prototype.setDisabled mw.libs.advancedSearch.ui.NamespaceFilters.prototype.onChangeTags oo.EventEmitter.prototype.emit