October 11-12, 2023 my Roku Ultra was updated online automatically. The interface is now malfunctioning. Selected items disappear. Migration throughout all functions is difficult and unpredictable. If I had not memorized where items were placed, I would not be able to use the Roku.
Have you tried restarting your Roku?
Depending on your Roku model you'll find the "System restart" under "Settings > System > Power", or if you have no Power option, under "Settings > System".
If a restart doesn't do it, or if you don't have sufficient control with the remote to navigate the Roku menus, you can also restart by pulling the power plug to the Roku for a minute or so then plugging it back in.