Update preview controls when switching previews

src/app/components/panels/PreviewPanel.ts

@@ -23,20 +23,23 @@ export const PreviewPanel = (view: View, model: DataModel) => {
         App.preview.set(null)
       }
     }
-    view.mount(el.querySelector('.panel-controls')!, `
+    const updatePreview = () => {
+      redraw()
+      view.mount(el.querySelector('.panel-controls')!, `
       ${App.preview.get()?.menu(view, redraw) ?? ''}
       <div class="btn" data-id="${view.onClick(() => {
         Tracker.hidePreview(); App.preview.set(null)
       })}">
         ${Octicon.x}
       </div>`, false)
+    }
     model.addListener({
       invalidated: redraw
     })
     App.preview.watchRun((value) => {
       if (value) {
         value.redraw = redraw
-        redraw()
+        updatePreview()
       }
     }, 'preview-panel')