I have a strange problem. I want to reset my config to avoid any residual parts of configuration on switch part, all after recent upgrade to 6.12. After reset with no default config I can login via Winbox MAC, then I got a reset of connection in 1 min, I am able to reconnect and it will stay connected. Then I upload my config starting with basic ethernet stuff (master ports, names), VLANs, bridges and IPv4 basic parts (DHCP client and server, DNS with tens of static records, firewall - filter, mangle, address list). After reboot it will hang up when "starting services" (msg on LCD).
I have two partitions with the same behaviour, one is always used as "backup of production".
I tried reset using power off and reset button cycle and then removal of default config when connected via Winbox MAC. I also tried Reset configuration with No Default Configuration. I tried downgrade to 6.11, removal of config, upgrade and config. I tried different set of packages, default and my set (+multicast, disabled Hotspot+IPv6+MPLS+PPP+Routing+Wireless).
I got the same result several times and I wonder about some basic mistake I do. Please advice.
EDIT: Applies to 6.13 too.