Always remember, there's software programming driving this remote. Just like a computer, it can freeze, same as the many Smart TVs doing the same when using certain Apps.
If it continues, I'd try resetting to original manufacturer settings and let it recycle through like when it was new.
As info, I don't work for this company or any related Best Buy company. This is based on my many years of experience in dealing with software and electronics. Going all the way back to the Hayes Modems, those big things that are now paperweights if you still have one.