10 posts later I got it, you had control center on network icon click if you had Win10 corner icons on. Newer builds enabled Win10 network UI and you don't like it, you care only about Win10 calendar and don't want to reconfigure icons.
too bad
StartAllBack 3.6.4 will finally provide automatic updates, new versions will be downloaded once pushed and installed on user logon.
You can grab test version to have 3.6.4 installed once available.
http://startisback.com/StartAllBack_setup.exe