only use window size workaround on linux where needed

main.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"log"
 	"os"
+	"runtime"
 	"sync"
 	"time"
 
@@ -62,6 +63,7 @@ func main() {
 	}()
 
 	// slightly hacky workaround for https://github.com/fyne-io/fyne/issues/4964
+	if runtime.GOOS == "linux" {
 		workaroundWindowSize := sync.OnceFunc(func() {
 			time.Sleep(50 * time.Millisecond)
 			s := mainWindow.DesiredSize()
@@ -72,6 +74,7 @@ func main() {
 		fyneApp.Lifecycle().SetOnEnteredForeground(func() {
 			workaroundWindowSize()
 		})
+	}
 
 	mainWindow.ShowAndRun()