WAB uses AGOL to control pop-up behavior and inspecting an app reveals that the pop-up CSS is being read from http://js.arcgis.com/3.14/esri/css/esri.css which means I cant directly edit it. I dont know much about web development, can I edit the style somewhere in the app directories to override the esri style and make a pop-up larger?
Solved! Go to Solution.
Using the map.infoWindow.resize that is already in MapManager.js updates the width but isnt doing anything to the height. I have figured out that if I drop things into dojo-override.css I can override the esri.css from the server. It will probably wind up being a two pronged attack from the JS and CSS since I need to make the image in the popup bigger via the CSS anyways.