How to flash session data when redirect to intended() using Laravel?

I'm trying to redirect to the intended URL after login, and flash some session data together to show a popup modal only once.

If I do this, it works:

return redirect(RouteServiceProvider::HOME)->with('showWelcome', true);

I can retrieve the session in blade view as such:

@if (session('showWelcome'))
    // show modal..
@endif

However, if I use intended(), the session is no way to be found:

return redirect()->intended(RouteServiceProvider::HOME)->with('showWelcome', true);

I've also tried the following:

• using the following instead of with():

$request->session()->flash('showWelcome', true);

• using the \Session Class instead of the session() helper to retrieve the session data:

@if (\Session::has('showWelcome'))
    // show modal
@endif

Unfortunately, the problem persists where it only works when I'm not using intended().

I've searched high and low but couldn't exactly find any solution to this.

Am I doing something wrong or understanding how redirect works incorrectly?