4.5.1 has a fix for the Firefox bug related to Date parsing. We also previously added proper support for XML feeds that are in "oldest first" order. Those two fixes should eliminate the skipping problem.

Thank you for the suggestion. Custom sounds will be supported soon (you can give a link as parameter that points to the sound file on the Internet).

Take a look at the API limitations so you'll understand why it's impossible to use that. https://developer.chrome.com/extensions/storage#property-sync

Without the feed URL it's a bit hard to troubleshoot this but Feedbro 4.5.0 now properly handles XML feeds that are in "oldest first" order which might have caused this in certain situations.

Edit (2020-07-29): another thing we noticed (and is fixed in 4.5.1 which is soon available) is that Firefox has a bug in Date object parsing when the year is expressed with just two digits. For example this string "Mon, 31 Aug 20 13:00:28 +0200" was parsed by Firefox JavaScript Date object as Wed Aug 20 2031 14:00:28 GMT+0300. This worked fine on Chromium-based browsers which made it hard to spot. This is also a likely reason for those skipped articles.

Of course, it would be have been a lot quicker to track down with a feed URL to test with. So for everyone else as well: if you think there's a bug somewhere, please include a feed URL that we can test it with.

Starred articles won't be auto-deleted so theoretically they are kept "forever". However, Firefox still seems to have reliability problems with IndexedDB so it's recommended to save your important article links to e.g. Pocket as well (or some other service). See the "Send to" menu in the article context.