After upgrading dev-cpp/ctemplate from 2.2 to 2.3, mysql-workbench does not work. It tries to find libctemplate.so.2 but that library does not exist anymore (now libctemplate.so.3).
/usr/bin/mysql-workbench-bin: error while loading shared libraries: libctemplate.so.2: cannot open shared object file: No such file or directory
I think ctemplate should be slotted.
dev-db/mysql-workbench likely just needs rebuilding due to ctemplate's soname change. Portage should catch this automatically with preserved-rebuild, or it could be located manually with revdep-rebuild.
I'm turning this into a subslot support bug so that we could trigger this sort of rebuild automatically in the future.