Content with spacer jumps when blurring and focusing the page

[revolter]

Describe the bug

When using a combination of ZStack, VStack and Spacer, some views jump when changing to another tab and back again.

To Reproduce
Steps to reproduce the behavior:

1. Download the attached project
2. Run carton dev
3. Open the webpage
4. Select another tab
5. Select the initial tab

Expected behavior

The text should remain outside the rectangle.

Screenshots
If this is a layout/rendering issue, please provide screenshots for both Tokamak and SwiftUI that highlight the difference.

Desktop (please complete the following information):

• OS: macOS Big Sur 11.2.3 (20D91)
• Browser: Safari
• Version of the browser: 14.0.3 (16610.4.3.1.7)
• Version of Tokamak: 0.6.1

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version of the browser [e.g. 22]
• Version of Tokamak [e.g. 0.6.1]

Additional context

1616847509.zip

[MaxDesiatov]

Thanks for the detailed report and sorry for the delayed reply! I assume that we can fix this by our layout code rewrite in #379, but there may be an easier fix. Unfortunately, I don't have an estimate for when I'll be able to investigate this in a detailed way. In the meantime, I'm happy to review PRs from other co-maintainers or contributors that fix this .