Description of problem:
Version-Release number of selected component (if applicable): gtk3 3.20.5
How reproducible: select any jpg image on a web site and "save As"
Steps to Reproduce:
1. Select a jpg image on a web page
2. Save As
Actual results: The image is saved but firefox crashes
Expected results: The image is saved and firefox continues normally
The problem doesn't occur if the image file is a png file.
Problem can be resolved by downgrading gtk3 3.20.5 to gtk3 3.20.4.
this crash is fixed in gtk3-3.20.6
*** Bug 1339946 has been marked as a duplicate of this bug. ***
Confirmed that gtk3-3.20.6, which landed in updates-testing today, fixes the problem.