On Wed, Aug 16, 2017 at 11:51 AM, Stefan Beller [off-list ref] wrote:

Any chance the "did not happen with 2.13" was not
freshly cloned but tested on an existing repo? If so a hot
candidate for suspicion is a93dcb0a56 (Merge branch
'bw/submodule-is-active', 2017-03-30), IMHO, just
gut feeling, though.

which makes it a feature, I should add.