add ifdef

src/node_stroke_preview.cpp

@@ -504,7 +504,9 @@ void NodeStrokePreview::draw_stroke()
         s_running = true;
         s_renderer = std::thread([] {
             BT_SetTerminate();
+            #if __OSX__
             std::this_thread::sleep_for(std::chrono::milliseconds(100));
+            #endif
             App::I.async_start();
             m_sampler_linear.create();
             m_sampler_linear_repeat.create(GL_LINEAR, GL_REPEAT);