Sketch Mirror Shows Blurred Areas in Preview

When using the Sketch app with Sketch Mirror to preview mobile designs, some areas of the screen appear blurred. This issue is visible especially on modal/alert overlays.

In the attached example, the alert container looks sharp on the desktop artboard, but appears blurred on the mobile device when mirrored. The rest of the screen displays correctly - only specific sections (like the alert popup) lose clarity.

Additional Info:

  • Device: (e.g : iPhone 11

  • Sketch Version: (Copenhagen 2025.3)

Thank You.

Hello Dilshan,

Thank you for reporting this issue. We’re trying to reproduce this on our end but we’re not capable of reproducing this issue.

Could you please send this document to us so we can review it? Alternatively, a sample file including that Frame and Overlay should be enough; you don’t need to send the entire document.

You can drop us an email at producsupport@sketch.com, letting us know it’s about this forum post, and we’ll take it from there.

Thanks again for posting, and sorry for the inconvenience. We’ll get to the bottom of this.