The Go to File wizard is by default case sensitive(should be case insensitive). Also toggling the case sensitive
checkbox has no effect.
Reassigning to utilities.
This is clearly a defect, the functionality is clearly broken. The "Case sensitive" checkbox does not work; checking or unchecking it has no effect. Furthermore, the search should be case-insensitive by default. The cognitive load for case-sensitive matching is much higher and defeats the purpose of having the Go To File functionality in the first place, which is to provide speed and convenience.
The Go To File Case Sensitive checkbox works fine.
Tested in dev build on both source files and non source files.
Regarding the case-insensitive by default.
It is case-insensitive be default(Case Sensitive is unchecked). The checkbox remembers the last state. If you checked it, it stays checked.