Thanks for your response Steve. I think you might be correct in that you can't disable this on our own, within the AGOL environment. I can't find anything that shows this option. At the very least, i wish it would just WORK if it's going to be there. I have yet to find an example where it works and the content expands with the window. I don't get it.
You will have to excuse my lack of knowledge on this, but how to you access the CSS for the embed map option? One of the limitations we are running into using this platform is that it seems our web developer is not able to adjust the CSS for the iframe code we provide using the "Embed Map" option. If there was a way they could access the CSS to 1)turn that button off 2) use custom fonts within the pop-ups. It would solve my problems for the most part.
Is this something I can tell/help them figure out?
Cheers