Windows Spotlight no longer working on Lock Screen

Same for me, on 2 different win11 PCs (both dell). Maybe after some recent windows update (it used to work fine until a few days ago). Spotlight works fine for background, but not for the lock screen. Even the lock screen preview form the Settings page just shows the default blue-ish background. Tried everything already mentioned in forums and/or suggested by GenAI (mostly wrong stuff): like reregistering components and/or clearing chace of ContentDeliveryManager and LockApp components, sfc/scannow, switch to a single picture and back to spotlight, switching "metered" flag of the connection, checking the ".dat" association, etc. Nothing worked.