message: The "cancel Frame" UI button shouldn't waitOnFrame, that locks UI
diff: @@ -1555,10 +1555,8 @@ void MainWindow::buildMainMenuEdit()
  refreshRenderer();
  }
  - if (ImGui::Button("cancel Frame")) {
  + if (ImGui::Button("cancel Frame"))
  frame->cancelFrame();
  - frame->waitOnFrame();
  - }
  ImGui::EndMenu();
  }
  