csn not latching in IOB

[AnttiLukats]

on my workstation with own toplevel I see warning that CSN is not registered in IOB (the other signals are).

I am using not this code from here, but the code from MEGA65 fork...

p_fsm : process (clk_i) begin if rising_edge(clk_i) then hb_csn_o <= '0'; -- added by Antti hb_rstn_o <= '1';

when I add the above line then CSN registers in IOB and design still works! not sure if that is proper fix or not.