Off-topic, but can someone tell me if this comment is phrased properly? I suspect that using "with" twice in the sentence is a little bit wrong, but I don't know how to correct it.
Personally I would say: “the issue with v2 is its design, not its implementation” or “one of the issues with v2 is its design, not its implementation”.
However your initial phrasing is perfectly intelligible, and probably grammatical (not that that’s so important, if it’s intelligible).
However your initial phrasing is perfectly intelligible, and probably grammatical (not that that’s so important, if it’s intelligible).