Hello,

I think you are right, even though I am not a StackOverflow believer
The check you have found is performed before attempting proxies (in accordance to CDI spec) which doesn't mention synthetic methods at all.
Should it not fail here, then Weld will silently skip proxying any final methods it founds, hence the fix you suggest should indeed work.
I am running it through TCKs and other tests as I am typing this...