Frontend does not change feeds properly

[AmaranthineCodices]

The frontend is not displaying feeds properly; I'm not super sure what's going on here.

Basic repro steps:

• Add two feeds - the ones I was using were both fetched from HTTP (the atom-http branch, specifically), but I'm not super sure it matters
• The first one (feed ID 1) will behave as expected
• The second one will not - switching to it will display a blank list, even when the feeds are there

Notes:

• The entries for the second feed are there in the database - they just aren't making it to the frontend
• I do not see requests in the backend server output for anything related to the second feed - it's included in the feed lists but the client doesn't even attempt to make a request to get the entries in it