Check the blob size instead of the progress reports (#3249)

web-app/src/screens/Console/Buckets/ListBuckets/Objects/utils.ts

@@ -78,7 +78,6 @@ export const download = (
   toastCallback: () => void,
 ) => {
   let basename = document.baseURI.replace(window.location.origin, "");
-  let bytesLoaded = 0;
   const state = store.getState();
   const anonymousMode = state.system.anonymousMode;
 
@@ -107,7 +106,6 @@ export const download = (
     "progress",
     function (evt) {
       let percentComplete = Math.round((evt.loaded / fileSize) * 100);
-      bytesLoaded = evt.loaded;
       if (progressCallback) {
         progressCallback(percentComplete);
       }
@@ -118,7 +116,7 @@ export const download = (
   req.responseType = "blob";
   req.onreadystatechange = () => {
     if (req.readyState === XMLHttpRequest.DONE) {
-      let completeDownload = bytesLoaded === fileSize;
+      let completeDownload = req.response.size === fileSize;
 
       if (req.status === StatusCodes.OK && completeDownload) {
         const rspHeader = req.getResponseHeader("Content-Disposition");