If you answer a question - or someone answered one of your questions - please remember to edit the page and set the status to answered. The status selector is below the edit box.
I'm new to administering TWiki (just installed it at home) but I am thankful for your evaluation of what's wrong. I added the following patch to fix this - it works on my installation. You should probably file a bug for this too develop.twiki.org's Bugs.ActionTrackerPlugin