There is an incompatible NTS protocol change deployed now by biggest NTS provider, Cloudflare, see: https://lists.ntpsec.org/pipermail/devel/2020-April/009280.html https://github.com/cloudflare/cfnts/pull/43 Other NTS providers have also switched now, some of them (Netnod) temporarly run both protocol versions on different ports. A very simple patch is needed to make net-misc/ntpsec work again with the updated protocol: https://lists.ntpsec.org/pipermail/devel/2020-April/009282.html
Bump to 1.1.9 should fix that: https://blog.ntpsec.org/2020/05/23/version-1.1.9.html
Closing, since 1.1.9 is (almost) stable (last commit was doc-related only).