Pale Moon forum

I found a problem with the Liveclick extension (1.0.0.1-signed from Mozilla extensions website).
This worked fine in PM27, namely it allowed to put a subscribed feed into the Bookmarks Toolbar.
The entry/icon became grey when all feed items were read, and there was an option to mark all items read - both very useful for me.
In PM28 both doesn't work anymore (with or without Liveclick installed) - the entry is never greyed out even if all items are read and the option "Mark all Items read" is missing.
I've tested with BBC news feed and PM forum (feed.php?f=37) , with a fresh PM28 profile and only Liveclick extension installed.
Here is a screenshot from PM28: And here is the PM27 screenshot with Liveclick and the feed marked as read:

Liveclick extension 1.0.0.1-signed is probably too old for PM28 (a FF ESR 52 fork).
Did you try the version 1.5.0 (would work with Firefox 38.0 - 52.*) ?

I have been using "LiveClick 1.5.0" for quite some time and it works the same in both 28 and 27.9.4.