hide download button in webview

app/javascript/submission_form/completed.vue

@@ -27,6 +27,7 @@
         </span>
       </button>
       <button
+        v-if="!isWebView"
         class="base-button flex items-center space-x-1 w-full"
         :disabled="isDownloading"
         @click.prevent="download"
@@ -122,6 +123,11 @@ export default {
       isDownloading: false
     }
   },
+  computed: {
+    isWebView () {
+      return /webview|wv|ip((?!.*Safari)|(?=.*like Safari))/i.test(window.navigator.userAgent)
+    }
+  },
   async mounted () {
     if (this.withConfetti) {
       const { default: confetti } = await import('canvas-confetti')