.gitignore patterns respected by Linux ag don't work in Windows ag

[mdmower]

On Linux, ag handles .gitignore patterns like the following just fine:

[Bb]in/
[Oo]bj/

On Windows, these patterns are not recognized. They have to be written as:

Bin/
bin/
Obj/
obj/

Is this something that could be improved?

Version info:

ag version 2.2.5 ; Windows port 2021-06-04 Win64 >= Server2003 amd64
MsvcLibX 2021-06-03 ; PCRE 8.44 2020-02-12 ; pthreads4w 3.0.0 ; zlib 1.2.11

Features:
  +jit -lzma +zlib +2enc