Clicking the "+ Add Custom Mod" button appears to want to start a modal dialog for entry, but instead creates a blank "Custom Mod", disables input, dims the page and removes the scroll bar, and waits for input that never arrives:
Windows 10 x64 v1607, Chrome 53.0.2785.143 m (64-bit).
Clicking the "+ Add Custom Mod" button appears to want to start a modal dialog for entry, but instead creates a blank "Custom Mod", disables input, dims the page and removes the scroll bar, and waits for input that never arrives:
Windows 10 x64 v1607, Chrome 53.0.2785.143 m (64-bit).