I'm only seeing 1 issue in the github issue tracker so I figure you're not doing that. The clone object is great, but there are a few issues with the documentation:
1) the help file references a clone~ [tilde] object but the object itself doesn't have a tilde
2) the first line of the documentation says 'make multiple copies of a subpatch' but then the next line indicates that it creates copies of an 'abstraction'. My understanding is that abstractions are their own files and subpatches are part of the parent file/canvas and just a way to modularize/tidy things.
3) if I do create a subpatch [pd test] and then create an object [clone 14 test] I get the error "clone: can't create subpatch 'test'" (instead of abstraction "test")
On linux, commit f1c7fe35a8e2105086958e2e2910345006512585 PD crashes when I have a [clone] object with no arguments and I turn DSP on (as previously noted).
Super excited to play with this though, curious to see how people go wild with it.