I've just noticed this issue myself on iOS 17, and have found that it seems to only truncate the button title when the image uses the template rendering mode. // The following causes the title to be truncated when bold text is turned on, // because the image width increases slightly setImage(myImage.withRenderingMode(.alwaysTemplate), for: .normal) // The following prevents the image size from changing when bold text is enabled setImage(myImage.withRenderingMode(.alwaysOriginal), for: .normal) Seems like an unusual bug with UIButton, but at least this fix/workaround is simpler than attempting to calculate changes to the intrinsic content size.