Auto detect color scheme sets one theme for all open windows despite different...

Auto detect color scheme sets one theme for all open windows despite different preferred schemes set in workspaces. Fixes #107855

src/vs/workbench/services/themes/browser/workbenchThemeService.ts

@@ -378,7 +378,8 @@ export class WorkbenchThemeService implements IWorkbenchThemeService {
 		if (themeSettingId) {
 			const theme = await this.colorThemeRegistry.findThemeBySettingsId(themeSettingId, undefined);
 			if (theme) {
-				return this.setColorTheme(theme.id, ConfigurationTarget.USER);
+				const configurationTarget = this.settings.findAutoConfigurationTarget(settingId);
+				return this.setColorTheme(theme.id, configurationTarget);
 			}
 		}
 		return null;

src/vs/workbench/services/themes/common/themeConfiguration.ts

@@ -298,6 +298,18 @@ export class ThemeConfiguration {
 		return theme;
 	}
 
+	public findAutoConfigurationTarget(key: string) {
+		let settings = this.configurationService.inspect(key);
+		if (!types.isUndefined(settings.workspaceFolderValue)) {
+			return ConfigurationTarget.WORKSPACE_FOLDER;
+		} else if (!types.isUndefined(settings.workspaceValue)) {
+			return ConfigurationTarget.WORKSPACE;
+		} else if (!types.isUndefined(settings.userRemote)) {
+			return ConfigurationTarget.USER_REMOTE;
+		}
+		return ConfigurationTarget.USER;
+	}
+
 	private async writeConfiguration(key: string, value: any, settingsTarget: ConfigurationTarget | 'auto' | undefined): Promise<void> {
 		if (settingsTarget === undefined) {
 			return;
@@ -305,15 +317,7 @@ export class ThemeConfiguration {
 
 		let settings = this.configurationService.inspect(key);
 		if (settingsTarget === 'auto') {
-			if (!types.isUndefined(settings.workspaceFolderValue)) {
-				settingsTarget = ConfigurationTarget.WORKSPACE_FOLDER;
-			} else if (!types.isUndefined(settings.workspaceValue)) {
-				settingsTarget = ConfigurationTarget.WORKSPACE;
-			} else if (!types.isUndefined(settings.userRemote)) {
-				settingsTarget = ConfigurationTarget.USER_REMOTE;
-			} else {
-				settingsTarget = ConfigurationTarget.USER;
-			}
+			settingsTarget = this.findAutoConfigurationTarget(key);
 		}
 
 		if (settingsTarget === ConfigurationTarget.USER) {