XCode 16 beta1 and beta2 hangs whenever I try to open Localizable.xcstrings. The localization screen appears but afterwards XCode becomes unresponsive until I kill it. To make matters worse, upon restart the last window, Localizaton is reloaded, instantly causing a hang again (I need to be super quick as I have about half a second to try to click elsewhere like crazy). The same localization strings file works fine on XCode 15.4. I tried to export all localizations in 15.4, empty the file, re-generate localization strings, re-import languages one by one in 16, starting with different languages (thinking maybe a weird exotic character causes the issue with one of the languages, this happened previously crashing XCode 15 until I found the offending character and replaced it with something else). But generally even after just adding a single language there is a serious slowdown - after adding the second one, XCode hangs again. Note: the app in question has a lot of localizable strings - I had no issue creating a simple project with only a few strings. Just hoping a fix - I really wished the issue was fixed in beta2 but now I am a bit concerned that maybe it's a rare problem and might not get fixed as I saw no similar reports so far.

For whatever reason SwiftUI sheets don't seem to be resizable anymore. The exact same code/project produces resizable Sheets in XCode 15.4 but unresizable ones with Swift included in Xcode 16 beta 2. Tried explicitly providing .fixedSize(horizontal false, vertical: false) everywhere humanly possible hoping for a fix but sheets are still stuck at an awkward size (turns out be the minWidth/minHeight if I provide in .frame).

Whenever there is any change in Localizable.xcstrings, XCode 16 simply crashes. This happens since early betas and continues even through the latest XCode 16.2 beta. The issue is probably due to some obscure character somewhere in the now monolithic Localization.xcstrings file which now contains all (sometimes rather exotic) localizations - thus making pinpointing the offending character basically impossible. The issue seems to happen when the Commit UI tries to produce the delta in the Localizable.xcstrings source code. The crash in question is this: Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 SourceEditor 0x132c33b04 SourceEditorDataSource.contentRangeForLineRange(_:) + 244 1 IDEDelta 0x362349768 specialized Collection.map<A, B>(_:) + 212 2 IDEDelta 0x362346198 SourceCodeGalleryExhibitEditor.delta_collapseToSuggestedLineRanges(for:) + 796 3 IDEDelta 0x362310e7c ComparisonContext.sessionDidScrapeDiffResults(_:) + 276 4 IDEDelta 0x3623111f8 @objc ComparisonContext.sessionDidScrapeDiffResults(_:) + 52 5 DeltaFoundation 0x1444bd4e8 -[DESession _notifySessionDidScrape] + 212 6 DeltaFoundation 0x1444bcf3c -[DESession _scrapeResults] + 400 I posted a FB about this way back then (FB14906558) and sent numerous reports but the issue is just not getting resolved.