I'm sending a form through post method. After submit a file - an image, should be saved / opened.
Works fine without iframe, but doesn't work in an iframe.
In iframe: Network tab in Developer Tools shows the Result / Description as 200 OK for the request, but no dialog window shows.
Simplified demo (with JSON instead of an image) showing the problem can be found here: http://jsfiddle.net/qcc53uyt/3/
Steps: press the "Get something button"
When comparing with other browsers (Edge, Chrome, FF) or event to IE11 without the iframe a JSON file is received.
Demo for getting an image is here: http://jsfiddle.net/a0bqtoov/
Steps: press the "Get image back"
I have tried with lowered Internet Options > Security options as well as with the default option, but no luck.
The only add-on I have are Java Plug-In SSV Helper and Java Plugin-In 2 SSV Helper, but both are disabled.
Could this be caused by some browser / OS options?