Blue cedar tip death

[RoadManDenDron]

Please help, my friend has this blue cedar

The tips have gone brown and limp but it's producing backbuds

There was just some frost

I don't have a clue about cedars and have never had one, I'm hoping it's frost damage but I'm concerned about fungus

Thank you

 

[Wires_Guy_wires]

It could be a fungal issue, I remember some blights also affect cedrus.
Did it go properly dormant? Because incomplete dormancy can lead to frost damage too.

 

[Wires_Guy_wires]

Sirococcus blight / RHS

This recently recognised fungal disease affects cedars and hemlocks. It causes shoot tip dieback and defoliation. Young trees may be killed if branches/trunk are girdled but it is reported that infected mature trees can live for many years.

www.rhs.org.uk

Seems to match the description.