This fix, once it exists, It will never be merged down to an older release branch?
Namely, you will not check which version of WELD is being bundled in glassfish 3.1.2.2, 2.5, 2.9 or weblogic 12.1.2, 12.1.3 etc... and merge the fix into what would be the next patch release of their standing library?

We support Weld 3.x and 2.3. For fixes for other version contact your application server vendor.