The Twin Tracker bug was verified fixed by QA and released in the 2.4 patch. We have not gotten any other reports of it occurring since the fix. If you are still having issues with it send in another ticket with video so we can see what is going on.
As for the Spellbinder issue, as I said we have one in repro. It relates to her generating energy. If that is not the one you are talking about I am not finding any record of any other tickets.