Channel RSS feeds not properly working for some channels

[APT37]

Official Instance

• [X] The bug is reproducible on the official hosted instance, or is API-related.

Describe the bug

RSS feeds for some channels are not working, as there are no items in the list, despite the channel having a lot of uploads. Playlist feeds seem unaffected.

To Reproduce

1. Go to https://piped.video/channel/UCB-hXAnF8U_KMAgtAUUC7Aw
2. See that the channel has uploads
3. Click the RSS logo
4. Cry

Expected behavior

Feed should contain items. The original feed on YouTube does: https://www.youtube.com/feeds/videos.xml?channel_id=UCB-hXAnF8U_KMAgtAUUC7Aw

Logs/Errors

No response

Browser, and OS with Version.

N/A

Additional context

No response