Line "block sound" flag not working.

[Ravick]

So, when you draw a simple shaped sector in a map, and set all its lines with the "block sound" flag, but, once in game, monsters inside the sector can hear you, what ould it be? It was supposed to keep the monster unable to hear whatever happens outside the secto, wasn't it?

Thanks in advance.

[Gez]

You need two lines to block sounds fully.

[Ravick]

Thanks!