I think I've seen mine do that. I think it was checking for an update, or retrieving one. It may retrieve updates to streaming tiles like YouTube & Vudu, and that doesn't change the last update date.
I just saw that happen yesterday. People were saying a recently introduced problem with antenna tv was fixed. I went to my update menu and checked for an update. It updated a couple streaming channels. But, the last updated date remained Dec. 18. I believe, if it had done that during its scheduled check for updates, I would have seen the white light flash.
Maybe yours is doing it more frequently to be that? You could always cover the lens with black electrical tape.
"People are often amazed at how much we’ve done with the number of engineers we’ve got." (Roku CEO Anthony Wood, Austin Statesman, Oct 4, 2019). "Amazed" is one way of putting it.
