Minor UI glitch when swiping to close image

[KevCui]

There is a minor UI glitch when swiping to close image:

• Tap to open an image in Talon
• Use one finger to swipe up/down slightly a bit and hold image
• Use other fingers to pitch zoom on the image

In this case, image will stay on screen as another layer, tap outside image won't close it. Tap back button will close it.

Btw, it could be a potential feature called picture-in-picture mode for image :)