STM32L073RZ LCD Configuration: CubeMX Cannot Assign VLCDrail1 to PB12

[ECSL]

I’m setting up a new project in STM32CubeMX for an STM32L073RZ using the internal LCD controller in 1/3 bias mode.
According to the STM32L0 reference manual (RM0367), the LCD voltage rails should be configured as:

PB12 - VLCDrail1

PB2 - VLCDrail2

However, in STM32CubeMX, the GPIO configuration only allows:

PB12 - VLCDrail2

PB2 - VLCDrail2

There does not appear to be any option to configure either pin as VLCDrail1.
Am I misunderstanding the LCD rail configuration for 1/3 bias mode on STM32L073RZ, or is this a limitation/bug in STM32CubeMX?

Thank you!

[Mahmoud Ben Romdhane]

Hello @ECSL 

Let me thank you for posting.

Let me thank you for bringing this issue to our attention.

The issue has been escalated to the development team under this internal ticket: CDM0062552

I will let you know as soon as the problem is solved.

Thanks.

Mahmoud