1st Bug:

Zoom toggle while not aiming:

  -Press zoom out toggle button, then press zoom in toggle button and the view will be stuck, zoom in toggle button won't work anymore, you need to press zoom out toggle button in order to unstuck the camera and make the zoom in toggle button work again.

2nd Bug:

Press zoom in toggle button for zooming in while not aiming, press aim key and the zoom will zoom out automatically. The zoom shouldn't zoom out automatically.
You will need to press zoom in toggle key again each time you use iron sights.

3rd bug:

Zoom toggle while aiming:

While aiming, zoom in toggle button will zoom in but the camera will be stuck and pressing again zoom in toggle button won't work. You will need to press zoom out button twice in order to zoom out.
After that you will need to press zoom in toggle button twice again in order to zoom in.

4th Bug:

While aiming without zooming in, zoom out toggle button doesn't work, it only will zoom out while holding zoom out button.