09-23-2018, 11:48 AM
OK, let's just put it down to a software glitch. 
Now, several days later, I open up Gimp, load the project, and the stroke command is performing exactly as I expected it to.
Thanks Blighty for your tip about 'alpha to selection'. Much appreciated,
Ofnuts, no, it's an RGB .xcf project.

Now, several days later, I open up Gimp, load the project, and the stroke command is performing exactly as I expected it to.
Thanks Blighty for your tip about 'alpha to selection'. Much appreciated,
Ofnuts, no, it's an RGB .xcf project.