You have a few formatting choices here for the VST name, which are controllable via a new ini setting.
Add a new variable VSTPlugInNameFormat via Edit | Preferences | Initialization file.
You can set the value to either 0, 1, 2, 3.
0 - Format 0: Vst supplied name which is the new default
1 - Format 1: DLL Name which is the old behavior
2 - Format 2: VST Plugin Name (DLL Name)
3 - Format 3: DLL Name (VST Plugin Name)
After you create the variable, restart SONAR and the menus should display the new naming format.