control: tag -1 moreinfo control: severity -1 minor Chromium uses priority 40 for update-alternatives while firefox uses priority 70, so it shouldn't take precedence, and nothing in the package related to alternatives or mime types changed between versions mentioned.
The problem could be an update-alternatives settings or many of the other ways to override defaults like desktop environment preferences, the sensible-browser setting, etc: https://wiki.debian.org/HOWTO/DefaultWebBrowser Best wishes, Mike
