GIT windows version Switch Caps Lock button issue on the input windows

When I try to press the 'Caps Lock' of the keyboard, and then 
try to input the uppercase string,

but after I switched to capital and finished input, I try to 
press the 'Caps Lock' button again, seems the input still keep 
capital letter for input,

Only when I move my cursor to the other input area and press the 
'Caps Lock' button again, then when I try to input in the Git 
console, then the issue will be fixed.

I am using the newest mintty 2.0.3(x86_64-pc-msys) and installed 
the Google Pinyin for input, Windows 7 64bit system.