The current loading animation is unclear at best when a user clicks on a menu item.

The current animation is right under the app name header and stretches horizontally across the page. The animation seems to be sliding little boxes from left to right. Frankly, it looks like it was supposed to be a gradient, but the image never loaded. And it has been like this for years.

See the current animation style here, I created a short little video:

My issue with this animation is that it is not obvious. And users do not think anything is happening while loading and they keep clicking again and again.

Thanks!