upgrade FOS v7.6.4 to v7.6.5, Can not reach VLAN1 from other VLANs

Dear cvovh,

Please try to run the debug flow bellow, this will give more information what happens with the non working traffic :

diagnose debug reset

diagnose debug flow filter saddr XXXXXX <----source IP

diagnose debug flow filter daddr YYYYYY <----destination IP

diag debug flow show function-name enable

diag debug flow show iprope enable

diagnose debug console timestamp enable

diagnose debug flow trace start 999999

diagnose debug enable

An information for the routing will help, so please run the following: 

                get router info routing-table details x.x.x.x <--- replace with source IP , then run again the same command but with destination IP.

Best regards,

Fortinet