Thankyou for the quick response. I will be sure to file a feedback report and will post the report ID once I have done so. Also, I should maybe have said, I have already sent a Code Level Support request regarding this issue; if it would be appropriate to post the case ID here I can do that too. In the mean time, I have the following set of instructions I wrote earlier that should contain all of the info needed to reproduce the problem: Project Creation Open xcode (I am on version 16.2) Click Create New Project... Change platform to iOS, select the App template, Click Next. Fill out the options form as follows: Product Name: locale-name-changing-test Team: None Organization Identifier: com.testapp Interface: Storyboard Language: Swift Testing System: None Storage: None Click Next. Find an appropriate folder. Click create. In the project navigator, ctrl+click on the folder locale-name-changing-test.xproj/locale-name-changing-test, then click New File from Template... Select String Catalog, tap Next. Name the s