[Affected versions]: - Firefox 62.0b4 [Affected platforms]: - macOS: 10.9.5, 10.11.6, 10.13.4. [Steps to reproduce]: 1. Launch Firefox; 2. Download the installer from http://archive.mozilla.org/pub/firefox/candidates/60.0b8-candidates/build1/mac/de/ 3. Start the installer, then close it; 4. Download the installer form http://archive.mozilla.org/pub/firefox/releases/62.0b4/mac/en-US/ 5. Run the installer from step 4 [Expected result]: - The background image for the installer is not affected [Actual result]: - The background image scale is affected. [Additional notes]: - at step 2-3, the version with the issue is noted already in bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1454610 - screenshot with the issue found at: https://bug1454610.bmoattachments.org/attachment.cgi?id=8968464

I don't think this is fixable based on my understanding of how Finder background image works. The metadata (saved as .DS_Store) simply references the image with an absolute path. It doesn't really reference the background image in its own DMG.