Unable to search for images in the Draw.io plugin

Question

In the left side menu, there is a 'Images' group, where you can search for an icon or general image.

When I write for instance 'Apple', the request just time out after some time, and informs me 'No results for Apple'. When I use the same functionality on the online draw.io/ page, it works fine...

Am I missing some plugin configuration? 
The Confluence server is online, as it loaded the draw.io plugin fine.

I'm using :

* Confluence Draw.io plugin version 4.0.4.0.
* Confluence 5.7

unknown · Answer

This is an issue when the server hosting Confluence doesn't permit connections to the online draw.io site to obtain search results. We've added an internal search for built-in shapes in the 5.0 release (due end of April).

Edit : The latest version now searches the built-in searches first, so you will see results.

unknown · Answer

We'll take a look.