Your examples below don't seem to match up with the subject line. And you are using a two year old unsupported minor release of v12. And the examples below don't indicate any kind of bug. If this really is a bug report you should demonstrate that more succinctly, and upgrade to the current supported release to see whether it has already been fixed.
If you are looking for general help on how to do things, or just want to voice your disappointment regarding some unimplemented feature in v12, the -general mailing list is the appropriate forum.
