That's right, if you have a channel window open, and it is being logged, then while connected the channel.N.log is in the Network folder. The moment you disconnect, that channel no longer has an associated network, so the channel.N.log in the Network folder is closed, and a new channel.N.log is opened in the root logs folder. The log in the Network folder is not copied to the root logs folder.

If in your case the channel.N.log from the Network folder is actually being fully copied to the root log, then that is a bug. However I can't reproduce this here. Can you describe a step by step process the reproduces the full copying of all contents of the channel.N.log file from the Network folder to the channel.N.log file in the root folder?