ahk_class is case-sensitive Topic is solved

[mikeyww]

Use ahk_class ClassName in WinTitle to identify a window by its window class.
Source: WinTitle & Last Found Window | AutoHotkey v2

Change to:

Use ahk_class ClassName in WinTitle to identify a window by its case-sensitive window class.

[vmech]

@mikeyww

Window titles are case-sensitive, except when using the i) modifier in a RegEx pattern.

https://www.autohotkey.com/docs/v2/misc/WinTitle.htm#WinTitle

[mikeyww]

ahk_class is not a window title. It is a window class. This could be clarified, such as, "Unless specified as case-insensitive through a regular expression, ahk_class is case-sensitive."

[Ragnar]

Thanks for the suggestion. I've changed this.