On the Reservation Management codeunit (99000845) there is a bug the call to the procedure OnBeforeAutoReserveTransLine should be with both RemainingQtyToReserve and RemainingQtyToReserveBase, the current call is with RemainingQtyToReserve for both parameters , please see below copy of the code for both the call and the procedure

Eran

 OnBeforeAutoReserveTransLine(

          ReservSummEntryNo, RemainingQtyToReserve, RemainingQtyToReserve, Description, AvailabilityDate, IsReserved, Search, NextStep, CalcReservEntry);

        if IsReserved then

 [IntegrationEvent(false, false)]

    local procedure OnBeforeAutoReserveTransLine(ReservSummEntryNo: Integer; var RemainingQtyToReserve: Decimal; var RemainingQtyToReserveBase: Decimal; Description: Text[100]; AvailabilityDate: Date; var IsReserved: Boolean; var Search: Text[1]; var NextStep: Integer; CalcReservEntry: Record "Reservation Entry")

    begin

    end;