stale screen state when switching tabs after previewing an xnft

[armaniferrante]

Steps to reproduce:

• go to xnft.gg
• preview an xnft (causing backpack to pop up with the xnft open)
• close the xnft inside backpack (by clicking the power button)
• change tabs

You will see the screen have stale state. Example, this screenshot.

[Vicky88844]

Hey there, @armaniferrante! I was wondering if you could do me a quick favor and assign this issue to me. I would really appreciate it!