Tint Color Misuse
Here’s an example in Apple’s calendar app. It uses a red tint color for buttons, but it also highlights the current day with a round circle using the tint color. It looks tappable, but it’s not.
And here’s an even worse example, from the App Store app. “Categories” in this screenshot is a button, but “Paid” directly underneath it — same blue, same font and style — is just highlighted to show that you are viewing paid apps. It’s actually “Top Grossing” that is the button.