First click changes track, second the pattern. I don’t think there is any way to change this as I’ve tried the different single click type options.
You have reminded me of a slight niggle though!
Double clicking from Pattern Editor does not change the Selected block to the new selection, but leaves it in the old block. You have to then click on it again, and as you may of navigated to a different pattern you can not even try to triple-click.
Nope. That’s the first thing I tested before making this post.