reproduction: 1) create folder c:\666 `mkdir "c:\666"`
2) create folder c:\777 `mkdir "c:\777"`
3) Create example file file with text for search c:\666\example.txt `echo "Text for Search" > "c:\666\example.txt"`
4) Copy c:\666\example.txt to c:\777\example.txt `copy "c:\666\example.txt" "c:\777\example.txt"`
5) Create symlink c:\777 -> c:\666\777 `mklink /D "c:\666\777" "c:\777"`
6) Try search `Text for Search` with Geany 
File with symlink is not founded `c:\666\777\example.txt`
Screencast: https://youtu.be/lzWsqX4xJm0