Fix some rendering issues

desktop/src/main/kotlin/ch/dissem/yaep/ui/desktop/desktop window.kt

@@ -20,6 +20,7 @@ import androidx.compose.ui.window.WindowState
 import ch.dissem.yaep.ui.common.theme.AppTheme
 import org.jetbrains.compose.resources.painterResource
 import yaep.commonui.generated.resources.Res
+import yaep.commonui.generated.resources.lightbulb
 import yaep.commonui.generated.resources.moon
 import yaep.commonui.generated.resources.sun
 import yaep.commonui.generated.resources.window_close
@@ -55,7 +56,7 @@ fun AppBar(
 ) {
     TopAppBar(
         navigationIcon = {
-            // TODO Icon(painterResource(Res.drawable.heart), null)
+            Icon(painterResource(Res.drawable.lightbulb), null)
         },
         title = { Text(text = "Yet Another Einstein Puzzle") },
         actions = {

desktop/src/main/kotlin/ch/dissem/yaep/ui/desktop/main.kt

@@ -26,11 +26,15 @@ fun main() = application {
             style = FontStyle.Normal
         )
     )
+    val windowState = rememberWindowState(
+        placement = WindowPlacement.Floating
+    )
 
     Window(
         onCloseRequest = ::exitApplication,
         undecorated = true,
         title = "YAEP",
+        state = windowState,
         icon = painterResource(Res.drawable.moon)
     ) {
         var useDarkMode by remember { mutableStateOf(true) }
@@ -41,9 +45,7 @@ fun main() = application {
                     useDarkMode = useDarkMode,
                     setDarkMode = { useDarkMode = it },
                     onCloseRequest = ::exitApplication,
-                    windowState = rememberWindowState(
-                        placement = WindowPlacement.Floating
-                    )
+                    windowState = windowState
                 )
             }
         ) {