CubeCell AB02 not defining ARDUINO_CUBECELL_BOARDPLUS from boards.txt

[MrSniffer]

I am using the HTC-AB02 w Windows Arduino IDE 2.0 selected via Tools/Board. Despite there being a (correct) line in boards.txt, namely
CubeCell-BoardPlus.build.board=CubeCell_BoardPlus
#if defined(ARDUINO_CUBECELL_BOARDPLUS)
fails. I believe every board is supposed to define ARDUINO_{build.board} but apparently not for me.

[MrSniffer]

Looks like the source of the problem is that the build.board= definition is not UPPERCASE and is not processed as ARDUINO_CubeCell_BoardPlus or as ARDUINO_CUBECELL_BOARDPLUS.

Probably the Arduino IDE 2.0 should UC whatever is in the boards.txt.