Mail forwarding with web browser makes subject "Fw: undefined"

HelloI might not be up to date about earlier discussions but anyway:

With a R 6.0.3 Domino Server / mail6.ntf / StdR6Mail (Release 6.0.3, 09/16/03) using the web browser the original subject of a message to be forwarded first shows up very quickly but within a second it is overwritten with the subject “Fw: undefined”. It is then nessecary (and of course annoying) to retype / copy&paste the original subject to have it meaningful.

Are there fixes, newer templates available?