External keyboard not working with iPad Pro

You leave a lot of variables not described in your report. Things like mask/model of the external display, and the keyboard. The app involved. Which iPadOS version. What function does the USB dongle perform? What is the scheme of the various connections (what is connected to what?). Don’t assume it is all the same as someone else’s report just because it sounds similar.

Other things to check would be what happens if you disconnect the display and just use the keyboard with the iPad’s native display?

I’m having the exact same problem on my 12.9” iPad Pro M1.

So I’d like to share some of my details that Branta_uk is asking about.

1. Display: LG 32UN880-B
2. App doesn’t seem to matter. Gmail, safari, finder. If I move any app to the external display, the keyboard works. If I move the app back to the iPad the external keyboard strokes are ignored.
3. IPad OS 17.5.1
4. The display is connected via a Microsoft Teams speaker hub and
   1. The hub has a Logitech Bolt dongle connecting the keyboard and mouse
   2. However, when I switch them over to Bluetooth directly to the iPad there is no change

When I disconnect the external display, the external keyboard works on the iPad display as normal

When I reconnect the external display, we’re back to it only working on the external display.

Mouse works on both.

Bonus points - it was working fine an hour ago