Recently I upgraded ROS in my CRS326-24G-2S+ to 7.22.3. I did not care to verify what was the last version I was using, but I guess it was the 7.21.3. After the upgrade, everything seemed to be alrigth, until today. Using Winbox v3.43, every time I access the menu ip>services, the program crashes. If I try to access /ip/services via terminal, or if I use WinBox v4.1, I do not have this issue. Anyone have a clue on what is going on?
This is probably JAB - Just Another Bug in the application.
Some time ago, I was trying for a long time to figure out why Winbox 3.43 completely crashed after switching the Wi-Fi mode (switching "Private Wi-Fi Address" from "Off" to "Fixed") on the client's iPhone. 
In the end, the Support response was simple: forget version 3.4 and use v4.1, and everything will work... And they were right! 