I provided FB23071213.

Thank you for your response. I’ll provide feedback.

macOS 26.4 + Xcode 27.0 beta macOS 27.0 beta + Xcode 27.0 beta

#import "AppDelegate.h" @interface AppDelegate () @property (strong) IBOutlet NSWindow *window; @end @implementation AppDelegate - (void)applicationDidFinishLaunching:(NSNotification *)aNotification { for(NSToolbarItem* toolbarItem in _toolbar.items){ switch (toolbarItem.tag) { case 1:{ _toolbarItemCrystalModelIdentifier = toolbarItem.itemIdentifier; }break; case 2:{ _toolbarItemDiffractometerIdentifier = toolbarItem.itemIdentifier; }break; } } _selectableToolbarItems = @[_toolbarItemCrystalModelIdentifier, _toolbarItemDiffractometerIdentifier]; } - (NSArray<NSString*>*)toolbarSelectableItemIdentifiers:(NSToolbar *)toolbar { return _selectableToolbarItems; } @end Comment out Line 16 or 27〜30→ Display toolbar title

macOS 26.4 /Users/hirai/Desktop/スクリーンショット 2026-06-12 1.25.54.png macOS 27.0 beta /Users/hirai/Desktop/スクリーンショット 2026-06-12 1.26.08.png It dose not display toolbar item title. And the Liquid Glass display looks strange. @interface AppDelegate () @property (strong) IBOutlet NSWindow *window; @end @implementation AppDelegate (void)applicationDidFinishLaunching:(NSNotification *)aNotification { for(NSToolbarItem* toolbarItem in _toolbar.items){ switch (toolbarItem.tag) { case 1:{ _toolbarItemCrystalModelIdentifier = toolbarItem.itemIdentifier; }break; case 2:{ _toolbarItemDiffractometerIdentifier = toolbarItem.itemIdentifier; }break; } } _selectableToolbarItems = @[_toolbarItemCrystalModelIdentifier, _toolbarItemDiffractometerIdentifier]; } (NSArray<NSString*>*)toolbarSelectableItemIdentifiers:(NSToolbar *)toolbar { return _selectableToolbarItems; } @end Comment out → Display toolbar title. Line : _toolbarItemCrystalModelIdentifier = toolbarItem.itemIdentifier; Lines : toolbarSelectableItemIdentifiers