This has been happening for while now.
I have some defined connections in Configure > Connections > Define Connections - under folder "Imported Fixed Users".
There is a little list at the bottom that you can open with a little downside triangle and normally it opens:
- Imported Fixed users > my defined connections
- Imported History
- Recent >
-----------------
- Other...
- Disconnect

The problem is - every day, maybe more than once a day - the menu above the line disappears. Only Other and Disconnect is left.
Of course when I go open the Defined Connections and re-save them, it goes back. But it's annoying.