Вот вроде нашел решение,
кто шарит английский - помогите с переводом :
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I found your thread when I was suffering from exactly the same issue. Essentially, when you do that first change into third person mode, it enables the "immersive camera" for first person, which seems to work by locking you into third person mode. It looks pretty nice, but gets rid of the crosshair.
My solution to this was found in another mod I'm using - DarNified UI. In the UI settings tab (fourth one on character), third from the bottom on the left hand column is an option for third person crosshair. If you turn it on - boom, working just fine again.