Getting Console Warning with debounce/throttle plugin

[frogydiak]

Hello! I'm getting this console warning:

Fluidbox: The jQuery debounce/throttle plugin is not found/loaded. Even though Fluidbox works without it, the window resize event will fire extremely rapidly in browsers, resulting in significant degradation in performance upon viewport resize.

when the plugin is already loaded:

I also tried doing:

$.throttle 

in the console and I get this:

So I guess everything is loaded properly.

Any idea?