Right. My issue was that the flight didn't even show up. I assume this is a related SW issue, just curious about it/how frequently it happens, etc. It's the first time I ran into the issue that I can remember
Google flights is so powerful/useful and I don't really want to go back to needing to search individual legs on every trip just in case there's a better option which includes a SW leg
Why don't you read up on Southwest's data use policies?
If that's too much bother, as a practical matter, plan on researching WN flights on southwest.com.