When I select a show to watch from the guide by clicking the OK or dpad center button on the remote, the show selection cursor briefly alights on the next show on the selected channel before the display of the selected show begins.
This is on a CCGTV running beta 112.18.2049. It also happens on my Shield TV Pro 2019, but did not happen before app updates over the past few days.
This does not interfere with use of the system, just gives you that brief "what did I do wrong" thought before the display switches from the guide to the selected show.