Hey 🙂 I've faced this on Chrome for Android, and Brave on macOS. I'm unaware of anything to replicate/trigger this.
Here's an example from a search in incognito with no extensions, besides Kagi Privacy Pass (disabled).

While testing with a bunch of searches across devices, it suddenly started working again. From the open tabs the only difference I can see is that latency when it doesn't work is above 70-80ms. I have a small sample size so I'll check latency next time I face the issue since I doubt it could be it.