No, it doesn't, I'm using wired backhaul and Wi-Fi from the extender works fine. I've seen reports round these parts of the network map views behaving oddly when you have something plugged into the second LAN port on a Pro extender though, so maybe that's what you're seeing?
Worth powering it off/back on if you haven't already.
Another test might be to take a Wi-Fi device next to the extender and toggle the Wi-Fi off/back on and see if it associates with the extender. Depending on where your main hub/other extenders are, you should be able to get a feel for whether or not it's doing this by the strength of the signal bars etc. on the Wi-Fi device.
