You'll notice
Paths containing backslashes are now flagged as suspicious on non-Windows systems
What
A path-safety check now also treats a path as unsafe if it contains a backslash (\) while running on an operating system other than Windows, in addition to its existing checks.
Why
Backslashes are normal path separators on Windows but not on other systems, so seeing one outside Windows can indicate a path is being spoofed or manipulated; flagging it helps catch that kind of attack.