I'd prefer to have my RSS feeds and newsgroups sort at the top of the folder pane, rather than the bottom, because I have so many mailboxes that they are never visible when sorted at the bottom, as they are by default, and then I forget about them and miss stuff (I've collapsed them all to take the below screenshots).
The plugin can successfully reorder mailboxes amongst each other, but I can't move any of the non-mailboxes from their default positions, as shown below.
Even though the plugin shows them sorted at the top, after a restart, RSS feeds are still at the bottom:

For that matter, choosing newsgroups to be the default to sort them first doesn't work either:

Plugin version: 1.1.1
MailNews version 52.9.8629a
Also tried with Epyrus 2.0.2 (also descended from Thunderbird 52), same there.
I'd prefer to have my RSS feeds and newsgroups sort at the top of the folder pane, rather than the bottom, because I have so many mailboxes that they are never visible when sorted at the bottom, as they are by default, and then I forget about them and miss stuff (I've collapsed them all to take the below screenshots).
The plugin can successfully reorder mailboxes amongst each other, but I can't move any of the non-mailboxes from their default positions, as shown below.
Even though the plugin shows them sorted at the top, after a restart, RSS feeds are still at the bottom:
For that matter, choosing newsgroups to be the default to sort them first doesn't work either:
Plugin version: 1.1.1
MailNews version 52.9.8629a
Also tried with Epyrus 2.0.2 (also descended from Thunderbird 52), same there.