The plugin is greyed out and says, "Can't read and change data on this site". I imagine updating permission or API hooks may fix this.

This would be the perfect lightweight app if it worked! Hopefully you get it working again.

Doesn't work in Zen browser. Instead of unloading the current tab it went to the next tab. This is different from right-click > unload tab.

I verified that ctrl+shift+U did that only when the extension was enabled. When it was disabled, it did nothing.

But if it worked, I would love it. I also love the 8.9KB size, the smaller the better!