6.40.8 changelog:

*) certificate - fixed incorrect SCEP URL after an upgrade;
*) health - fixed empty measurements on CRS328-24P-4S+RM;
*) ike2 - use "policy-template-group" parameter when picking proposal as initiator;
*) ipv6 - fixed IPv6 behaviour when bridge port leaves bridge;
*) routerboard - fixed "mode-button" support on hAP lite r2 devices;
*) ssh - fixed SSH service becoming unavailable;
*) traffic-flow - fixed IPv6 destination address value when IPFIX protocol is used;
*) winbox - show "Switch" menu on cAP ac devices;
*) wireless - improved compatibility with BCM chipset devices;

Download the new 'RouterOS 6.40.8' version here: https://www.mikrotik.com/download