lispyville-toggle-mark-type appears to lose final character of selection on transition to visual state

[bpstahlman]

I'm using the mark-toggle and mark-special key themes, and I have the following in my init.el to allow me to toggle between special and visual states:

(eval-after-load 'lispyville
  `(progn
     (lispy-define-key lispy-mode-map "v" #'lispyville-toggle-mark-type)))

If I enter lispy special on the start of a parenthesized sexp, then hit m, the entire sexp is selected as expected. But if I want to copy the sexp, I use v to toggle to evil visual state (since y in lispy special is mapped to non-copy functionality). Although the call to lispyville-toggle-mark-type does indeed toggle state from lispy special to evil visual, the resulting visual region does not include the closing parenthesis. Is this a bug, or do I likely have something misconfigured? Also, am I going about this all wrong? Is there a better way to copy (yank) a sexp? Lispy's C-y doesn't work because its mapped in evil insert state to evil-copy-from-above and in evil normal state to evil-scroll-line-up. I guess I could use lispy's n command, but I'm wondering if there's an operator-based, idiomatic Vim way to perform copies, which is sexp-aware...

Edit: I should have mentioned that the off-by-one cursor issue happens only when cursor is at the end of the region when I hit v: for instance, if I hit d to move to the start of the region after marking the sexp but before hitting v, there's no issue.

Also, I just remembered the "text-objects" theme, which I'm thinking may provide the idiomatic yank/delete operator capability I was looking for... I'll try playing around with that. IIUC, the text-objects are supposed to work without targets.el, correct?