Is it possible to determine the default image in picture tags?

Hello everybody,

I’am looking for a possibility to determine the loaded default image for responsive images/ media queries:

<picture><img></picture>

In my case Pimcore is always loading the smallest defined image which is bad for e.g. IE 11.

Am I doing something wrong or is it Pimcore?

Thanks in advance for y’all appreciated help.

Daniel