MCPWM fault - low level trigger

[elexinverter]

Greetings,
The documentation for MCPWM fault initialization function mcpwm_fault_init describes

Initialize fault submodule, currently low level triggering is not supported

also the definition for its argument in mcpwm.h file says

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typedef enum {
    MCPWM_LOW_LEVEL_TGR = 0,  /*!<Fault condition occurs when fault input signal goes from high to low, currently not supported*/
    MCPWM_HIGH_LEVEL_TGR,     /*!<Fault condition occurs when fault input signal goes low to high*/
} mcpwm_fault_input_level_t;

I am not able to find a reason as to why low level trigger should not be used.
I have tried using initialization with

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MCPWM_LOW_LEVEL_TGR

and the module works as it should with low level fault trigger.

Can somebody put a light on this? Is there an errata or bug report?

Thanks.