After I changed the color profile to gray scale, and created a new layer to paint, I tried to change some values using the HSV Filter, the occurs the bug, this not occurs on RGB layers. Reproducible: Always Steps to Reproduce: 1. Open a file with a colorspace RGB 2. Change to gray scale 3. Create a new layer, notice the palette changes to Grays 4. Paint something 5. Use Filter > Adjust > Color Balance Actual Results: The selected gray scale layer glitch, if "Cancel" it goes back to normal, if "Ok" the image stays 'buged'. Selecting "Preview" does not change the results. Expected Results: Be able to change the lightness without problem. On the same file, the RGB layers does not change to gray, and do not show the bug.
Duplicated *** This bug has been marked as a duplicate of bug 351009 ***
Since the other bug is solved i guess we can close this duplicate report