From the web guide it seems impossible to tune channels that have shows that end soon, because the guide data is not shown. See the screenshot. How do I tune 5.1 right now? If I click on the channel name, I get a list of shows coming up soon. If I click on the show that begins at 3:00 pm, I'm given the option to record that show. Which raises two questions, what's playing now on that channel, and how do I tune to that channel? This often happens when I haven't recorded something, but want to start watching the broadcast (e.g. local news). Is leaving out the guide data on the grid for shows ending soon intentional?
I agree and it's been mentioned before you can't tell what show is there, but you can click the blank area to watch. AT least it works for me as long as the end of that show off to the left isn't over yet.
No, it's not clickable for me (that's the first thing I tried), and I don't see anything on the page code that would make it so. At least not at the times that I have tried (usually within 10-20 minutes of the next boundary).

I have not seen the behavior you're showing in your first screenshot. What was the time when it was taken?
Verify that the clock set correctly on your dvr server and in the client browser you're using.
Also make sure you're running the latest pre-release. I don't see it on v2022.09.07.2124
Here's what I see

Unless the show off the screen to the left has ended


