3.2.12 regression in predicate builder

Hi,

I asked this in another thread, but somehow sent it without a subject,
so it may have gone unread by those that could answer - apologies.

Just wondering what the current thinking is about this issue:

    https://github.com/rails/rails/pull/9268

Seems to be affecting a number of people - is there anything I can do
to help get a fix into the 3.2 branch?

Thanks,
George