Nothing strange here, behaves exactly as documented.
And why not? You’ve got better plans for those coins?
You could also use it on an enemy, you know.
One more thing: it used to be at speed 7, then got buffed, but now the healing part, which also negates the bleeding in an optimal-case scenario, is a bit awkward if used immediately, since your merc is unlikely to be damaged at speed 2 (see also some more explanation below).