Xcode 26 Debug Error Display Issue

I recently installed Xcode 26.0.1.

(MacBook Pro 16, M2 Max, 64GB memory, macOS 26.0 (25A354))

Normally, when debugging, a red error appears in the left-hand Issues navigation, and you can click on it to access the location of the error.

However, currently, when debugging, the red error does not appear in the "Issue Navigation" on the left-hand side of the Xcode screen.

  1. There is an error, but it isn't displayed.
  2. It does appear, but disappears after 1 second. (It disappears before I can click on it.)

The error doesn't appear or disappears after 1 second, so I can't pinpoint the exact location.

Please help me resolve this issue.

Additionally, I deleted all Xcode development-related files inside my Mac and restarted my MacBook, but the symptom still persists.

Thanks so much for the post.

To my knowledge, I have not observed that behavior on that version of Xcode. I believe it would be beneficial if you could provide a sample that allows others to reproduce the issue and subsequently identify the error that is being displayed.

Do you get the same results with just the relevant code in a small test project? If so, please share a link to your test project. That'll help us better understand what's going on. If you're not familiar with preparing a test project, take a look at Creating a test project.

Albert Pascual
  Worldwide Developer Relations.

Xcode 26 Debug Error Display Issue
 
 
Q