I am working on an Evoq site for a client, and we're running into an issue with our skin where clicking on "Add Module" or "Add Existing Module" causes a page reload. In the process, the modules already on the page disappear (specifically, the grid/content layout module).

When using the default skin this doesn't happen...the selected module appears floating over the page and allows the new module to be placed on the page by dragging and dropping with no page reload.

Can someone point me in the right direction to track down a possible cause?

I've already tried removing any custom javascript from the page with no change. If I replace my template with code from the default template, the problem is resolved.