Merge pull request #578 from vector-im/fix-progressbar

Fix progressbar not working on attachment uploads

src/platform/web/docroot/sw.js

@@ -69,7 +69,14 @@ async function purgeOldCaches() {
 }
 
 self.addEventListener('fetch', (event) => {
-    event.respondWith(handleRequest(event.request));
+    /*
+    service worker shouldn't handle xhr uploads because otherwise
+    the progress events won't fire.
+    This has to do with xhr not being supported in service workers.
+    */
+    if (event.request.method === "GET") {
+        event.respondWith(handleRequest(event.request));
+    }
 });
 
 function isCacheableThumbnail(url) {