There is a known bug affecting the behavior of HTT and HST regarding haste. It appears that HTT and HST will gain or lose a tick near their haste breakpoints due to latency issues and might randomly award another tick at arbitrary haste levels. The second part has led the resto community to believe that the haste breakpoints are wrong which is not the case. For all intent and purposes the Haste section and its theorycrafting will reflect the intended behavior of both of these abilities.
Personal observations (special thanks to Mimu for his valuable help) have proved the following. For more detailed information and the observed results refer to the discussion at #69. In short :
1. HST and HTT breakpoints are correct however if you have above 50 world latency chances are that you are going to lose a tick if you are very close to your haste breakpoint more often than not.
2. HTT breakpoints in practice will, to some extent, follow Healing Rains breakpoints. Note that both totems will not follow spell haste breakpoint calculation methods due to their fixed duration so there is no need for time adjustment in the formula (special thanks to Binkestein for his help on that). This means that even though HTT appears to almost coincide with HR breakpoints, by no means their formulas are the same.
[b]As a final note. With the latency issues all of HTT and HST breakpoints are fluid and very unreliable. Just because you hit a haste breakpoint you are not guaranteed an extra tick. It is not therefore recommended to aim for these soft haste caps. For more information on how to reforge do read on. For in-depth explanation refer to #71.