Can't render design view with App connect turned off

On a Mac, just updated to 3.3.3. I have a project with classic asp server side. I open up an html page, the design view renders correctly. I turn off App connect, and the design view crashes. Worked correctly right before I updated. Anyone else seeing this?

Do you have some iframes on your page html code?

Yes, I do have an iframe on the page.

I took the iframe out and it now renders correctly. Was there a change made with the latest update to cause it not to render with an iframe? I have not had any issues until now.

@George, is there a fix or a solution to this?

What is the url the iframe tries to load? Is it local?

Btw you really shouldn’t use iframes any more - it is a very old technology

The iframe is with a very specific payment processor for logistics and that is our only option for integration. If done correctly, iframes are still fine. This did not happen before the latest update.

So does it have a local src or external url?

It is an external url