Web object not resized properly in Chrome
I have a web object that points to a webpage that contains one graphic, a banner ad. In IE(Flash) and FF(HTML5) the web object mostly behaves and the banner ad is resized along with the rest of the player as the browser window is resized.
However, in Chrome(Flash) the banner image appears to be stuck at a particular size. If the browser window is too small then the image is cropped. If the window is too big, a large gray border appears to the right and below the banner.
I've tried setting the img tag width and height to 100% in my webpage, but that did nothing. Inspecting the page code I can see that the web object is placed inside of an iframe with width and height set to 100%.
Has anyone else encountered this, and is there a fix?
Btw, this is in Chrome version 45.0.2454.85 m.