Size of image in modal view

[schnuti]

Steps to reproduce the issue

View a larger image in modal view. Only parts of the image is shown dependent on browsers view size. It has a default (ctrl + 0)

Expected result

Shouldn't the image be resized according to viewport size? (Alternative scrolling?)

Actual result

Only a part of the image is shown. To view the whole image you have to resize the browser one or more times. (ctrl + - )

System information (as much as possible)

Not system or browser dependent as far as I understand. Tested with FF and Chrome on Win10.