Wonder whether all this comes from the modifications to the coupling boxes. They where modified as there where not of enough size to accommodate the movement of the inner vehicle couplers around tight track as i understand.
If this was the case then the bogies may be moving a lot more and possibly outside the envelope envisaged originally by the designers of the yaw damper bracket and when the mod for the coupler box was done no thought was given to what else may be struggling with tight curves. Just a thought, not an engineer or rolling stock technician.
You aren't the only one to be thinking that. The dampers are also optimised for a small range of movement at higher speeds so large range movements at low speed (i.e. tight curvatures) may cause a few issues.