Double-click one of the attached image thumbnails.
Expected results
A pop-up showing the entire image should appear.
Actual results
The pop-up that appears by double-clicking a thumbnail has a fixed width that doesn't match with the image size. The height of the pop-up is fitting instead.
\ tested with Iceweasel 38.7.0 on Debian 8, Firefox 45.0 on Fedora 23, Chromium 49.0.2623.87 on Debian 8.3 (64-bit) **
Reproduction steps
Expected results
A pop-up showing the entire image should appear.
Actual results
The pop-up that appears by double-clicking a thumbnail has a fixed width that doesn't match with the image size. The height of the pop-up is fitting instead.