[v6] How to get rid of enforced forward slash in basename?

[poc7667]

How to use HashRouter to match below format?

The basename won't match. Why HashRouter put a strange assumption that # is always followed by a slash? Any idea to make HashRouter work in our case without modifying our current URL format?

https://domain/user_id=123#app/products/food/milk&min_price=10&max_price=2000

Our product has a strange URL format design, which is not allowed to be changed(since customers used a lot already)

<HashRouter basename={`app`}>
    <Routes>        
        <Route
            path={`products`}
        >
            <Route
                path={`food`}
                element={<FoodView/>}/>
            <Route
                path={`computer`}
                element={<ComputerView/>}/>
        </Route>        
    </Routes>
</HashRouter>