Photoshop: Clone Stamp with Dual Brush setting - can't work on edges of canvas

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  • Problem
  • Updated 3 weeks ago
  • (Edited)

I first encountered this bug in the 30th anniversary version. I often retouch images using what I call a texture brush - a speckled pattern brush that is achieved by the Dual Brush option set to Multiply blending mode.

A bug was introduced in the 30th anniversary version, where the edges of the canvas were "protected", as in nothing was being applied to them, in relation to the brush size. Use a small brush, and only a tiny sliver of the edge cannot be touched. Use a very large brush, and you cannot have an effect over a larger area near the edge.

I uploaded a short video to youtube as a demonstration:

This bug has been reproduced by many other individuals using Dual Brush Clone Stamps on a variety of systems. The key factor seems to be the Dual Brush option. A regular brush (B) with Dual Brush works as it should, but Clone Stamp doesn't.

Windows 10, TR1950X, 64GB if that is of any concern. Please no "have you tried turning it off and on again" -tier answers.

This problem does not exist in versions prior to the 30th anniversary version.

Thank you!
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Lari Heikkilä

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Posted 3 weeks ago

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Photo of Dave Grainger

Dave Grainger

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For what it's worth,  Puget Sound Systems did a pretty thorough study of CPUs vs Photoshop. Their conclusion was "AMD Threadripper CPUs are not good for Photoshop."

You can look up the study at
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Lari Heikkilä

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Completely irrelevant to the problem - TR is just fine for Photoshop. Slightly slower performance in some tasks has no bearing on this issue.
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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Thanks. Great video. I've asked engineering to take a look.