PostgreSQL Windows Turkish Search Problem

I am using PostgreSQL Windows version as Turkish Collation
The table contains the record "ŞİLİ" and "şili",
When I Search with ILike, It Does Not Perform Case-Insensitive Searches,
When I search with uppercase letters, I get 1 result, and when I search with lowercase letters, I get 1 result.
There is no problem with Turkish Collection in Linux Version and 2 results are given.
This problem occurs in Windows version.