Didn't you know that 78% of all bugs mentioned in the issue tracker are "by design"? I mean, they can hardly let them all expire, so this must be the very latest creative "solution". The issue remains highly dubious if they simply say "by design, period" without explaining the deeper thought process behind it. My dentist can do that too - and I hate him for it.
I think they just misinterpreted my original bug report to mean that system chat history wasn't cleared when cmdrs jump to a new system.
Anyway, the bug report is getting a few confirmations now, so hopefully it'll pass the 'ten people saw it or it never happened' stage.