I'm sad to inform that the bug reported here [1] for Boost 1.59 is still present in Boost 1.64  :(

It seems the bugfix I tested was merged into develop but never made it into the release branch.

Please, could you track this so it doesn't miss the next release?

Regards

[1] http://boost.2283326.n4.nabble.com/Fwd-Ublas-Bug-in-1-59-in-file-boost-numeric-ublas-detail-concepts-hpp-td4681800.html