That makes me wonder what method HLSW is using to check for maps, because that seems like it is using something other than the rcon maps * command.
The list of maps you are seeing seems to be single and multiplayer maps for serveral HL1 based games.
This happens with all version of HLSW, so I don't think that its a bug in hlsw.
If you notice, I'm using an older version too, 1.3.0 and it has worked perfectly for years.
Timex, can you check that maps folder on you're end and see if it differs with what I am seeing ?