I have an S24 Ultra. Had it since it first came out early Feb. Went to Google Messages soon after. Using Gboard. All has been fine except about a week ago or so it started to often fail to respond when I'm tying a text and go to tap in the text I just wrote to place an active cursor in order to edit. It just doesn't respond to my tapping. No cursor appears, and it also won't scroll the text when I swipe up and down. I have to either long-press and hope it will highlight a word and then I can move around with the spacebar or my finger, or I have to use the text editing feature with the text selection icon. When it's failing to respond to a finger tap it also fails to respond to a tap with the stylus, too. Eventually, I get it to activate and can edit.