I am finding with the last two, or is it three, updates of PS, when I open a picture, be it straight into PS or a raw image via ACR, the canvas is split into four equal segments (1/4 rectangles) with the picture split between them, sometimes white rectangles, sometimes black ones. If I hit CMD + J to duplicate the layer, the new layer is the picture as should be, CMD + E to merge the two layers and we are good to go. With the latest update, it doesn't do this quite so often, but if using the spot healing brush, it will work for three or four strokes, then it draws the black line over the screen and freezes, I'm left with a black smudge on the screen. If I go to the next area to spot heal it works, but the previous one is still a black smudge on the screen. Then 3 or 4 more spot healing strokes, it freezes again... Again CMD + J to duplicate the layer and it appears the spot healing brush has worked, the black smudges go away and the tool has done it's job. Again CMD + E to merge layers and carry on. Not difficult to carry on working, but rather a pain in the derriere ! Have now installed version 23.5.5 and that seems to function as it should, will have to do more testing... TIA, Normy
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