UE 5.6 and 5.7 both affected.
Bridge plugin version 2025.0.1.
Clicking Sign In opens the Quixel login popup.
Authentication succeeds and account is displayed.
Popup never returns control to Unreal and remains on the Quixel account/licensing page.
Bridge remains in signed-out state and Download/Add buttons are unavailable.
Standalone Bridge authenticates successfully and can browse/download assets.
Fab website shows all assets in library.
Issue persists after cache reset, plugin verification, and reinstalling standalone Bridge.