FYI, I opened PR 287046 to track a "non starting anymore" issue that happens on x11/sfwbar. It's not strictly a port issue because upstream has the same problem and the dev says
Temporary solution is to lock x11-toolkits/gtk-layer-shell to not update to 0.9.2 .This would affect beta16 as well, but current git isn't in a shape for release currently.