Can't add components to a form

I’m getting a blank page when I press the + sign to add a component to one of my forms.

Could you please share your app and a screenshot of what you see?

I got it working on my PC. When I tried using my mobile device, clicking the + would result in a blank screen. Not sure why, but it’s likely fine. Could be a cache issue due to all the new icons for components that seem to have changed today.