sorry, I see what you meant now...before I re-started TWS ZB was using 121'01 and after I restarted it started using fractions. I thought the quote format change was related to the tick change.
Yup, it's doing that to me too. I don't mind if the /32 is stuck on there - but it's reducing the fractions. 120 15/16 bid, 120 31/32 ask. Um no, it should stick with the 32nds.