Describe the bug

The UI freezes or becomes unresponsive when using the Preview feature.

Steps to reproduce

1. Upload an image test.png
2. Open the image test.png
3. Using the sidebar, navigate to the actions section
4. When a user clicks the preview and closes the image

Expected behavior

The preview should work without affecting the UI.

Actual behavior

The UI freezes or becomes unresponsive after closing the image

Tested on

Infinite Scale 7.1.0-rc.1 Community
ownCloud Web UI 11.1.0