Thank you! This workaround worked perfectly! I checked on both my own project running on Mac, as well as the sample project posted by zoeycat. Xcode 26.1.1. Thank you again for this workaround, as I was considering having to write all of my scenes in code - and that did not spark joy.

@DTS Engineer did you get a chance to investigate this? Encountering similar issues when trying to use the SKS GUI editor…