After requesting System Extension install user doesn't get a system modal

We're having a problem, where user is not asked by the system to allow installing System Extension. OSSystemExtensionRequest.activationRequest is submited, and delegate receives requestNeedsUserApproval callback. But, in some cases users do not get the system modal asking them to open System Preferences and manually enable the extension. Looks like system shows the modal once, but if user just presses OK, then it's impossible to show this modal once more. Is there something that can be done to trigger modal every time?

PS. Looks like when developer mode for extensions is enabled, modals are opened every time app asks to install them.