I was just facing the issue in Magento. If we use uppercase letters as request path.
Request path: en-US/store-locator Target path: stores/usa
Now if i try to open url as
then it doesn't redirect to Target URL.
But if i change uppercase to lowercase in request path
Request path: en-us/store-locator Target path: stores/usa
Now it works.
I have thousands of URL with uppercase in request path.