Seen on mobile site
https://logstash.wikimedia.org/app/dashboards#/doc/logstash-*/logstash-2021.05.05?id=NdSZPXkBfVMx58vqtddo
at MwRcfiltersUiMenuSelectWidget.OO.ui.SelectWidget.onFocus URL1:308:800 at HTMLDivElement.dispatch URL1:114:214 at HTMLDivElement.elemData.handle URL1:110:848 at Object.trigger URL1:160:675 at Object.simulate URL1:161:550 at HTMLDocument.handler URL1:161:931 URL1: https://meta.m.wikimedia.org/w/load.php?lang=en&modules=ext.centralNotice.geoIP%7Cext.centralauth.centralautologin%7Cext.eventLogging%2CnavigationTiming%2CwikimediaEvents%7Cjquery%2Coojs%2Coojs-router%2Coojs-ui-core%2Coojs-ui-widgets%2Csite%7Cjquery.client%2Ccookie%2CmakeCollapsible%2Cthrottle-debounce%7Cjquery.makeCollapsible.styles%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cspecial%2Cstorage%2Ctemplate%2Cuser%2Cutil%2Cviewport%2Cwidgets%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cmediawiki.rcfilters.filters.dm%2Cui%7Cmediawiki.special.changeslist.legend.js%7Cmediawiki.special.changeslist.watchlistexpiry%7Cmediawiki.special.recentchanges%7Cmediawiki.template.mustache%7Cmediawiki.ui.anchor%7Cmobile.init%2Cstartup%7Cmobile.ooui.icons%7Cmobile.pagelist.styles%7Cmobile.pagesummary.styles%7Cmobile.placeholder.images%7Cmobile.startup.images%7Coojs-ui-widgets.icons%7Coojs-ui-windows.icons%7Coojs-ui.styles.icons-content%2Cicons-editing-core%2Cicons-editing-styling%2Cicons-interactions%2Cicons-layout%2Cicons-media%2Cicons-moderation%7Cskins.minerva.icons.images.scripts%7Cskins.minerva.icons.images.scripts.misc%7Cskins.minerva.icons.page.issues.default.color%7Cskins.minerva.icons.page.issues.medium.color%7Cskins.minerva.icons.page.issues.uncolored%7Cskins.minerva.options%2Cscripts%7Cuser.defaults&skin=minerva&version=1tfaz