Logging out of the FTM forums then tossing the FTM cookies in Safari, then closing / restarting Safari and logging back into the FTM forums has resolved ALL of the "interesting" issues that I've experienced since the UBBT upgrade.
My guess is that there was a slight format difference in the data contained in the earlier UBBT cookies that only partially updated when using the newer UBBT software......and thus the anomalies. Clearing the cookies that were a legacy from the previous UBBT software and getting fresh ones written by the current UBBT software seems to be the answer.
All appears well now.
