We have created a custom map to circumvent the node limit put on the Worldwide Map. An html file is placed on the server, which queries through an API the NPM database, receives some data about all of our nodes in JSON and creates a map with Leaflet. This map is then shown in the web client as an iframe in a Custom HTML widget.
I don't quite know what the problem is, though I suspect it has to do with the fact that the entire process takes about 2 full seconds, but the result is that none of the other widgets load their data. After those 2 seconds, the map works all fine and dandy, but the rest is just blank:

Are there any settings that I could tweak to prevent this from happening?
For now I have placed the new map in it's own view, which we can reach through the menu, but that's a workaround and suboptimal.