ah...fixed! :-} with latest Xcode (28 April 2025) Version 16.4 beta (16F1t) The size of the preview pane is kept between editor/file changes and is not reset to a default value.

I'm going crazy - it's driving me mad, the constant adjustment of the 'preview pane'. i have to go back to 16.2 oh, how excited I am waiting for a 16.4 beta with 1000 bug fixes!

I suspect that the 'OP' itself is a bad, cheap coding AI that has to train itself and therefore requests real code intelligence (for example you) and sucks knowledge from it.

Just for the records: I opened a Feedback-Report/Radar on it: FB17283530

Anyhow...eagerly awaiting Xcode 16.3.x Release. @imneo If you're just 'playing around', here's a link to some valuable information on how to bend Xcode further. [https://github.com/ctreffs/xcode-defaults/tree/master)

as of now, March 20, issue is fixed (for me): visionOS 2.4 beta 4 (22O5230a) SDK + visionOS 2.4 beta 4 (22O5231b) Simulator (Installed)

Same here...some Test/Throw-Away Apps still lying around. Can not remove. Everything else is already cleaned up. Have also some Swift Playground Apps which I can not remove. Ah, it is not satisfying to just leave it like this. I will escalate to support via Request.

UserInfo={tryAgainLater=true works. no issues up to now.