2.8 2D image painting mode - clone tool

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1

Hello! I do not understand how to use the clone tool in a 2D editor. On the site docs.blender.org it is written - In 3D projective painting the clone cursor can be set with Ctrl-LMB. - And it works well. But - In 2D painting the clone can be moved dragging it with RMB. - This does not work for me.1

2

I do not understand how to use it to
so I changed the keymap to Ctrl-RMB

result
result693×831 159 KB

but this still does not work for me.