Your account is fine - nothing changed. Most probably you're just expecting vouch links where there aren't any. (They only show up on posts that are [dead].)
thank you so much for the clarification!
Yes, you're correct. The vouch button doesn't appear when viewing the thread context containing the `[dead]` comment. It only appears when clicking the specific comment directly via its permalink (or comment ID). I may have misremembered being able to vouch with the context to the comment being visible.
Thanks as always dang ^_^