I'm also seeing issues with mask in the latest beta that didn't happen on beta 1.
My code:
import SwiftUI
struct ContentView: View {
		var dollarFill: some View {
				LinearGradient(
						gradient: Gradient(colors: [
								Color.green,
								Color.blue
						]),
						startPoint: .top,
						endPoint: .bottom
				)
				.cornerRadius(10)
		}
		var dollarFillPercent: CGFloat = 0.7
		var body: some View {
				GeometryReader { gr in
						ZStack {
								self.dollarFill
										.mask(ZStack(alignment: .leading) {
												RoundedRectangle(cornerRadius: 10)
														.frame(width: gr.size.width * self.dollarFillPercent)
												RoundedRectangle(cornerRadius: 10)
														.strokeBorder(style: StrokeStyle(lineWidth: 1.0, dash: [5]))
										})
						}
				}.aspectRatio(CGFloat(2.25), contentMode: .fit)
		}
}
The forum won't let me post screenshots, but basically what I see on beta 1 is a 70% "filled in" rectangle. In beta 2, this rectangle is 100% filled in no matter what dollarFillPercent is set to.
May not be the same issue as OP, but sounded potentially related?
Soysauce44
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Post
Replies
Boosts
Views
Activity
karaverse, have you made any progress on this? I'm running into the same issue :)
Yay! jpritchard9518's answer worked for me—had also been stuck on this for months.