[Affected versions]: - 55.0a1 (2017-03-17) - 54.0a2 (2017-03-17) - 53.0b3 build1 (20170316045436) - 52.0 build2 (20170302120751) [Affected platforms]: - Windows 7 x64 - Mac OS X 10.10 - Ubuntu 14.04 x86 [Steps to reproduce]: 1. Launch Firefox 2. Start downloading a large file (e.g. https://www.ubuntu.com/download/desktop) 3. Click the downloads button from the toolbar in order to open the Downloads panel 4. Click the Cancel button next to the download progress 5. Click the Retry button next to the download progress 6. Pause the current download (inspect the Pause context menu option) [Expected result]: - The user is able to properly pause the current download, even if it was previously canceled [Actual result]: - The Pause context menu option is grayed out [Regression range]: - This issue is not a recent regression as it is reproducible all the way back to 46.0a1 (2016-01-01)
Mass wontfix for bugs affecting firefox 52.
This is likely an issue with the specific server implementation, because normally downloads can be paused and resumed multiple times.