In version 10.9.3.0, the original source is not shown in forwarded messages, they appear as copies. In version 10.9.2.0, everything is ok.
Also, there seems to be some inconsistency in the releases on GitHub. The description for version 10.9.3.0 indicates that it is the build for the last official build of 10.12.0 at the moment, but this does not seem to be the case.
In version 10.9.3.0, the original source is not shown in forwarded messages, they appear as copies. In version 10.9.2.0, everything is ok. Also, there seems to be some inconsistency in the releases on GitHub. The description for version 10.9.3.0 indicates that it is the build for the last official build of 10.12.0 at the moment, but this does not seem to be the case.