Hi Gene,

Ronie can give you the details but this is due to his refactoring of the Mac graphics system to use Metal. Currently we can’t get it to work correctly on older versions of MacOS. Hopefully this is temporary. You can select the older graphics subsysyems by using either of these as the first argument to the VM on the command line: -opengl -core-graphics

_,,,^..^,,,_ (phone)

On Apr 23, 2019, at 7:21 PM, Gene Ragan notifications@github.com wrote:

Building from the latest sources on the Cog branch, I see the attached image when loading various images using various OSX builds. I have tried the 64-bit Pharo, Squeak and newspeak builds with their associated images. I see some variation of the attached image below. If I rollback the source to the 201901172323 tag, I am able to build and load an image and see the window as expected.

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I'm closing this one, because Ronie did the right thing since then. If someone disagree, please raise your voice.