I haven't been able to figure out which widget is causing this, but when I view a tool's detail screen (/tool/{name}) in my dev environment this is logged to the error console three times:
Uncaught TypeError: this.$refs.wrapper is undefined scrollIntoView VSlideGroup.js:284 setWidths VSlideGroup.js:363 setWidths VSlideGroup.js:353 onResize VSlideGroup.js:232 inserted index.js:13 VueJS 20 callHook$1 callInsert wrappedHook invokeWithErrorHandling invoker invokeInsertHook patch _update updateComponent get run flushSchedulerQueue nextTick flushCallbacks promise callback*timerFunc nextTick queueWatcher update notify reactiveSetter init vue-router.esm.js:2932 init vue-router.esm.js:2931 updateRoute vue-router.esm.js:2352 transitionTo vue-router.esm.js:2206 confirmTransition vue-router.esm.js:2340 step vue-router.esm.js:1944 step vue-router.esm.js:1951 runQueue vue-router.esm.js:1955 confirmTransition vue-router.esm.js:2335 step vue-router.esm.js:1944 step vue-router.esm.js:1948 iterator vue-router.esm.js:2322 resolveAsyncComponents vue-router.esm.js:2105 iterator vue-router.esm.js:2300 step vue-router.esm.js:1947 step vue-router.esm.js:1951 step vue-router.esm.js:1951 runQueue vue-router.esm.js:1955 confirmTransition vue-router.esm.js:2330 transitionTo vue-router.esm.js:2203 handleRoutingEvent vue-router.esm.js:2523 setupListeners vue-router.esm.js:2529 setupListeners vue-router.esm.js:2920 transitionTo vue-router.esm.js:2207 confirmTransition vue-router.esm.js:2340 step vue-router.esm.js:1944 step vue-router.esm.js:1951 runQueue vue-router.esm.js:1955 confirmTransition vue-router.esm.js:2335 step vue-router.esm.js:1944 step vue-router.esm.js:1948 iterator vue-router.esm.js:2322 resolve vue-router.esm.js:2070 once vue-router.esm.js:2146 VSlideGroup.js:284 scrollIntoView VSlideGroup.js:284 scrollIntoView self-hosted:1177 setWidths VSlideGroup.js:363 (Async: FrameRequestCallback) setWidths VSlideGroup.js:353 setWidths self-hosted:1177 onResize VSlideGroup.js:232 onResize self-hosted:1177 inserted index.js:13 VueJS 20 init vue-router.esm.js:2932 forEach self-hosted:206 init vue-router.esm.js:2931 updateRoute vue-router.esm.js:2352 transitionTo vue-router.esm.js:2206 confirmTransition vue-router.esm.js:2340 step vue-router.esm.js:1944 step vue-router.esm.js:1951 runQueue vue-router.esm.js:1955 confirmTransition vue-router.esm.js:2335 step vue-router.esm.js:1944 step vue-router.esm.js:1948 iterator vue-router.esm.js:2322 resolveAsyncComponents vue-router.esm.js:2105 iterator vue-router.esm.js:2300 step vue-router.esm.js:1947 step vue-router.esm.js:1951 step vue-router.esm.js:1951 runQueue vue-router.esm.js:1955 confirmTransition vue-router.esm.js:2330 transitionTo vue-router.esm.js:2203 handleRoutingEvent vue-router.esm.js:2523 (Async: EventListener.handleEvent) setupListeners vue-router.esm.js:2529 setupListeners vue-router.esm.js:2920 transitionTo vue-router.esm.js:2207 confirmTransition vue-router.esm.js:2340 step vue-router.esm.js:1944 step vue-router.esm.js:1951 runQueue vue-router.esm.js:1955 confirmTransition vue-router.esm.js:2335 step vue-router.esm.js:1944 step vue-router.esm.js:1948 iterator vue-router.esm.js:2322 resolve vue-router.esm.js:2070 once vue-router.esm.js:2146
My first thought was that this might be related to scrollBehavior handler in vue/src/router/index.js, but logging statements there do not show before the errors. The only explict v-slide-group that we are using is in components/search/Filters.vue and only rendered on the search results screen at breakpoints below md.
It seems like there must be some compound widget in vue/src/views/Tool.vue that is causing this (and 3 instances of it).