fixes #85304

src/vs/platform/windows/common/windows.ts

@@ -91,7 +91,7 @@ export interface IWindowSettings {
 	titleBarStyle: 'native' | 'custom';
 	autoDetectHighContrast: boolean;
 	menuBarVisibility: MenuBarVisibility;
-	newWindowDimensions: 'default' | 'inherit' | 'maximized' | 'fullscreen';
+	newWindowDimensions: 'default' | 'inherit' | 'offset' | 'maximized' | 'fullscreen';
 	nativeTabs: boolean;
 	nativeFullScreen: boolean;
 	enableMenuBarMnemonics: boolean;

src/vs/platform/windows/electron-main/windowsMainService.ts

@@ -1381,7 +1381,7 @@ export class WindowsMainService extends Disposable implements IWindowsMainServic
 			// Window state is not from a previous session: only allow fullscreen if we inherit it or user wants fullscreen
 			let allowFullscreen: boolean;
 			if (state.hasDefaultState) {
-				allowFullscreen = (windowConfig?.newWindowDimensions && ['fullscreen', 'inherit'].indexOf(windowConfig.newWindowDimensions) >= 0);
+				allowFullscreen = (windowConfig?.newWindowDimensions && ['fullscreen', 'inherit', 'offset'].indexOf(windowConfig.newWindowDimensions) >= 0);
 			}
 
 			// Window state is from a previous session: only allow fullscreen when we got updated or user wants to restore
@@ -1576,7 +1576,7 @@ export class WindowsMainService extends Disposable implements IWindowsMainServic
 			} else if (windowConfig.newWindowDimensions === 'fullscreen') {
 				state.mode = WindowMode.Fullscreen;
 				ensureNoOverlap = false;
-			} else if (windowConfig.newWindowDimensions === 'inherit' && lastActive) {
+			} else if ((windowConfig.newWindowDimensions === 'inherit' || windowConfig.newWindowDimensions === 'offset') && lastActive) {
 				const lastActiveState = lastActive.serializeWindowState();
 				if (lastActiveState.mode === WindowMode.Fullscreen) {
 					state.mode = WindowMode.Fullscreen; // only take mode (fixes https://github.com/Microsoft/vscode/issues/19331)
@@ -1584,7 +1584,7 @@ export class WindowsMainService extends Disposable implements IWindowsMainServic
 					state = lastActiveState;
 				}
 
-				ensureNoOverlap = false;
+				ensureNoOverlap = state.mode !== WindowMode.Fullscreen && windowConfig.newWindowDimensions === 'offset';
 			}
 		}
 

src/vs/workbench/electron-browser/desktop.contribution.ts

@@ -256,10 +256,11 @@ import product from 'vs/platform/product/common/product';
 			},
 			'window.newWindowDimensions': {
 				'type': 'string',
-				'enum': ['default', 'inherit', 'maximized', 'fullscreen'],
+				'enum': ['default', 'inherit', 'offset', 'maximized', 'fullscreen'],
 				'enumDescriptions': [
 					nls.localize('window.newWindowDimensions.default', "Open new windows in the center of the screen."),
 					nls.localize('window.newWindowDimensions.inherit', "Open new windows with same dimension as last active one."),
+					nls.localize('window.newWindowDimensions.offset', "Open new windows with same dimension as last active one with an offset position."),
 					nls.localize('window.newWindowDimensions.maximized', "Open new windows maximized."),
 					nls.localize('window.newWindowDimensions.fullscreen', "Open new windows in full screen mode.")
 				],