ok now it works (thank you fptje)

package.json

@@ -27,7 +27,7 @@
         "esbuild": "^0.19.4",
         "eslint": "^8.51.0",
         "fast-copy": "^3.0.1",
-        "kwin-api": "^6.0.7",
+        "kwin-api": "^6.0.8",
         "mnemonist": "^0.39.5",
         "prettier": "3.2.5",
         "typescript": "^5.2.2"

src/controller/actions/windowhooks.ts

@@ -148,7 +148,7 @@ export class WindowHooks {
 
         this.ctrl.driverManager.rebuildLayout(this.window.output);
 
-        // TODO - Add cleanup for timer (timer.destroy())
+        timer.destroy();
     }
 
     putWindowInBestTile(): void {

src/controller/desktop.ts

@@ -1,6 +1,7 @@
 // desktop.ts - Classes and interfaces relating to the desktop class
 
-import { Output, QmlWorkspace, VirtualDesktop, Window } from "kwin-api";
+import { Output, VirtualDesktop, Window } from "kwin-api";
+import { Workspace } from "kwin-api/qml";
 
 export interface StringDesktop {
     desktop: string; // VirtualDesktop.id
@@ -47,11 +48,11 @@ export class Desktop {
 }
 
 export class DesktopFactory {
-    private workspace: QmlWorkspace;
+    private workspace: Workspace;
     private desktopMap: Map<string, VirtualDesktop> = new Map();
     private outputMap: Map<string, Output> = new Map();
 
-    public constructor(workspace: QmlWorkspace) {
+    public constructor(workspace: Workspace) {
         this.workspace = workspace;
         this.desktopsChanged();
         this.screensChanged();

src/controller/index.ts

@@ -1,7 +1,8 @@
 // controller.ts - Main controller object of the script
 
-import * as Kwin from "kwin-api";
-import * as Qml from "kwin-api";
+import { Options, Tile, Window } from "kwin-api";
+import { Workspace, KWin } from "kwin-api/qml";
+import * as Qml from "../extern/qml";
 
 import { Log } from "../util/log";
 import { Config } from "../util/config";
@@ -16,9 +17,9 @@ import { WindowHookManager } from "./actions/windowhooks";
 import { SettingsDialogManager } from "./actions/settingsdialog";
 
 export class Controller {
-    workspace: Kwin.QmlWorkspace;
-    options: Kwin.Options;
-    kwinApi: Kwin.QmlKWin;
+    workspace: Workspace;
+    options: Options;
+    kwinApi: KWin;
     qmlObjects: Qml.Objects;
 
     desktopFactory: DesktopFactory;
@@ -33,8 +34,8 @@ export class Controller {
     config: Config;
 
     workspaceExtensions: WorkspaceExtensions;
-    windowExtensions: Map<Kwin.Window, WindowExtensions> = new Map();
-    managedTiles: Set<Kwin.Tile> = new Set();
+    windowExtensions: Map<Window, WindowExtensions> = new Map();
+    managedTiles: Set<Tile> = new Set();
 
     constructor(qmlApi: Qml.Api, qmlObjects: Qml.Objects) {
         this.workspace = qmlApi.workspace;

src/driver/index.ts

@@ -49,7 +49,12 @@ export class DriverManager {
                     desktopString,
                 );
                 let engineType = this.config.engineType;
-                const engine = this.engineFactory.newEngine(engineType);
+                const config: EngineConfig = {
+                    engineType: engineType,
+                    insertionPoint: this.config.insertionPoint,
+                    rotateLayout: this.config.rotateLayout
+                }
+                const engine = this.engineFactory.newEngine(config);
                 const driver = new TilingDriver(engine, engineType, this.ctrl);
                 this.drivers.set(desktopString, driver);
                 this.ctrl.dbusManager.getSettings(
@@ -75,7 +80,8 @@ export class DriverManager {
                     break;
                 }
             }
-            if (remove && this.rootTileCallbacks.get(tile)) {
+            if (remove && this.rootTileCallbacks.has(tile)) {
+                this.rootTileCallbacks.get(tile)!.destroy();
                 this.rootTileCallbacks.delete(tile);
             }
         }

src/engine/engine.ts

@@ -2,7 +2,8 @@
 
 import { Direction } from "../util/geometry";
 import { InsertionPoint } from "../util/config";
-import { LayoutDirection, QSize, Window } from "kwin-api";
+import { LayoutDirection } from "kwin-api";
+import { QSize } from "kwin-api/qt";
 import { Client as IClient, Tile as ITile, TilingEngine as ITilingEngine } from "./index";
 
 export interface EngineConfig {

src/engine/index.ts

@@ -2,7 +2,8 @@
 
 import { Config } from "../util/config";
 import { Direction } from "../util/geometry";
-import { LayoutDirection, QSize, Window } from "kwin-api";
+import { LayoutDirection, Window } from "kwin-api";
+import { QSize } from "kwin-api/qt";
 import {
     EngineCapability,
     EngineConfig as InternalEngineConfig,

src/extern/qml.ts

@@ -1,20 +1,15 @@
 // qml.d.ts - Declarations for external QML methods
 
-import {
-    QmlWorkspace as Workspace,
-    Options,
-    QmlKWin as KwinApi,
-    DBusCall,
-    Signal, ShortcutHandler
-} from "kwin-api";
-import { QTimer } from "kwin-api";
+import { Options } from "kwin-api";
+import { Signal, QTimer } from "kwin-api/qt";
+import { Workspace, KWin, DBusCall, ShortcutHandler } from "kwin-api/qml";
 import { EngineConfig } from "../engine";
 import { StringDesktop } from "../controller/desktop";
 
 export interface Api {
     workspace: Workspace;
     options: Options;
-    kwin: KwinApi;
+    kwin: KWin;
 }
 
 export interface Objects {
@@ -35,7 +30,9 @@ export interface Settings {
     hide(): void;
     saveAndHide(): void;
     setSettings(s: EngineConfig): void;
-    saveSettings: Signal<(settings: EngineConfig, desktop: StringDesktop) => void>;
+    saveSettings: Signal<
+        (settings: EngineConfig, desktop: StringDesktop) => void
+    >;
     removeSettings: Signal<(desktop: StringDesktop) => void>;
 }
 
@@ -49,4 +46,4 @@ export interface DBus {
     setSettings: DBusCall;
     removeSettings: DBusCall;
     exists: DBusCall;
-}
+}

src/util/config.ts

@@ -1,7 +1,7 @@
 // config.ts - Static config class
 
 import { EngineType } from "../engine";
-import { QmlKWin } from "kwin-api";
+import { KWin } from "kwin-api/qml";
 
 export const enum InsertionPoint {
     Left = 0,