I have seen that problem less often with more recent versions of TurboCAD. Even when dull yellow is the highlight mechanism, I can still pull facets about half the time.
Occasionally, usually with more complex objects, it takes a while to respond to a Quick Pull and it becomes much more difficult to get the desired result. Better to lock the desired pull distance before trying to do the pull, then wait for it to respond.
I haven't really dug into it, but I wouldn't be surprised that a long, involved ACIS History is the cause. You may want to experiment with Exploding objects before modifying them if you are having problem.
TC Pro Platinum 2018, 2017, 2016 & 2015 (all with LightWorks & RedSDK) & V21
System: i7-5820K @ 3.30GHz, ASRock X99 Extreme4, 16GB DDR4-2133 RAM, Gigabyte GTX 970, Samsung NVMe SSD 950 (256GB), Windows 7 Pro (64-bit) SP1