Incorrect shortcut for develop for "Lightroom Classic CC Ver.7.1" Japanese Language

Lightroom Classic Version: 7.1 [ 1148620 ]
Windows 10
Language:Japanese

At the time of development, an instruction to perform a slider operation of color representation is displayed with a comma and a minus (, / -) with a shortcut.
But comma does not work.

Commas and periods are item movements of color representation, and the actions overlap.

In the English version, it works with plus and minus, so there is no problem.

Original posted in Japan Forum.
https://forums.adobe.com/message/10037397