Assertion Failed editting list with taxonomy field

I have lists with a taxonomy column in them. when editing the list, jsgrid looks to be throwing an assertion failed. Digging into the call stack, it is calling GetDisplayControl, the assert is "Sys.Debug.assert(displayControlName in displayControlsSingletonMap);

Rolling back a bit, the order of calls on the call stack

Sys$_Debug$fail

Sys$_Debug$assert

GetDisplayControl

RegisterPropType

RegisterNewCustomPropType

SP_UI_Taxonomy_ControlRegistration$RegisterGridControls

Init

The displaycontrolName at the point of the assertion error is "" so it defininately isn't in displayControlsSingletonMap, which is why the assert is happening.

Anyone have any solutions?