Can you confirm that the basics are not working.
Using a single layer image.
The layer does not have the pixel lock enabled
A suitable size brush
The brush opacity 100
The clone tool mode set to 'none'
The tool initially shows on the canvas with a 'bar' sign until the source is chosen
Then, ctrl-click (cmd-click on a Mac) to set a source, let go ctrl (cmd) and click to 'paint' in the clone. As this demo: https://i.imgur.com/eGK66do.mp4
Not working? Probably the Mac cmd key not acting as ctrl.
Post a bug report: https://gitlab.gnome.org/GNOME/gimp/issues/
Using a single layer image.
The layer does not have the pixel lock enabled
A suitable size brush
The brush opacity 100
The clone tool mode set to 'none'
The tool initially shows on the canvas with a 'bar' sign until the source is chosen
Then, ctrl-click (cmd-click on a Mac) to set a source, let go ctrl (cmd) and click to 'paint' in the clone. As this demo: https://i.imgur.com/eGK66do.mp4
Not working? Probably the Mac cmd key not acting as ctrl.
Post a bug report: https://gitlab.gnome.org/GNOME/gimp/issues/