Search return results from multiple channels despite --channel flag

I'm trying to search messages from a specific channel, like #general in the team foobar, but keybase returns results from all conversations.

Here's the command I'm using:
`keybase chat search -C "1" --channel general "FOO" `

I expected that this would only return matches from #general, but it returns matches from all conversations I've taken part of. How do I restrict to #general or any specific channel?

Start with the `keybase chat search` command and reproduce the supplied search using `--channel general`. Trace how the `--channel` flag is handled and verify that results are limited to #general while preserving the search term; the issue is done when matches from other conversations are excluded.

Written by the indexing model from the issue text.