This looks similar to the IR remote problem I reported here. I’m using the WDTV Live Gen 4 remote and the IR extender that came with the Vero 4k+.
Kodi 18.9 - Vero 4k+ immediately responds to all button presses in all menus and during movie playback
Kodi 19.1 - Vero 4k+ responds often enough in the main menu items, but almost no response during movie playback. If I hammer on the buttons often enough, I can get the movie to fast forward 2x, pause or stop, but it’s not usable this way.
My advice for now is to stay with Kodi 18.9.