Cangjie input method

When using cangjie to type simplified characters, the codes seems inconsistent. basic characters don't seem to work like simplified versions of 學, 話 etc.
Like 学. The code should be 火月弓木(FBND) according to cangjie rules but in Windows 11, the correct code is 戈月弓木(IBND). It is actually not too bad as you can easily google the correct code. I found few words that even google and cangjie guide books didn't give me the correct answers. BTW, for 讠in 话, if 戈女(IV) doesn't work, try 戈弓(IN).

To google the code: type a character in traditional font and follow it with 簡體倉頡碼 in search box.