Srendarr has been a little spotty for me lately, but it usually has it right (there was an update that I downloaded today I think). FTC seems to be working correctly, but you won't get the visual bars for the timers. You might want to play around with the settings on Srendarr to make sure it's catching everything.
Unfortunately all the buff addons seem to still show only timers since a spell usage rather than real buff timers. For example, you get timer for structured entropy but not for the major buff it gives. This was due to the coding, and I would guess it's still the same. However, I have recently seen buff expiring notes on a combat log addon, which makes me wonder if we might get real buff displays soon.