bugfix of output not always being shown

frontend/src/upscalingHandler.js

@@ -61,6 +61,7 @@ class UpscalingHandler {
         
         child.stderr.on( 'data', ( data ) => {
             console.error(`stderr: ${ data }`);
+            win.send( 'progress', '\n' + data );
         } );
         
         child.on( 'error', ( error ) => {

frontend/src/views/HomeView.vue

@@ -156,7 +156,7 @@ export default {
             let self = this;
 
             ipcRenderer.on( 'progress', function ( evt, message ) {
-                self.output += message;
+                self.output = message + self.output;
             });
 
             ipcRenderer.on( 'finish', function ( evt, message ) {