Created attachment 119963 [details] With and without Mirror Tool (fake process) If we enable the Mirror Tool (Horizontal or Vertical), we can painting with it correctly and get a mirrored image. But if we create a some selection and transform the image, we won't have a mirrored image. Because selection and Transform/Move Tools is not working with the Mirror Tool. (See attachment with fake work process how could it be)
We can draw in mirroring mode, but we can't make selection or transform mirrored.