That could easily be what happened - I usually (if I'm in the forum and want to visit my account) right-click the WebAssist logo and select 'Open Link in New Tab'. To be honest I can't really remember the exact circumstances!
A good tip to put in your database would be this:
"If you want to get something to work, go on to a public forum and make a point of indignantly going on about how it doesn't work. Inevitably someone will patiently point out that, in fact, it does work."
Seems to work every time for me, sadly.