Please include as much of the following information as possible to help me fix the bug:

Brief Description of Bug

If you click your main bag, and then click on another bag whilst the bag window is open, the bag window closes.
Submitting this as a bug report as I assume this is not how it's intended to be.

What are you trying to do that requires clicking on the bag item?

Nothing really, I did it by mistake yesterday. It's only a visual bug that would be easily fixed by adding a isBagOpen() check on the toggle hook.

Imo it just looks strange when the bag icons are glowing but no bag window is displayed.

Because of the risk of blocked actions when modifying Blizzard UI components I've left it untouched. The issue will also happen if you click on the bag icon and then close with a keyboard shortcut.

The behaviour of any bag icon toggling the entire bag frame is intentional - as if it can open the frame, it should be able to close it too.