This morning I upgraded and now there is no debugger tool bar.
The workaround is of course to use keyboard shortcuts, but please bring it back!:
F10 (Step Over)
F11 (Step Into)
Shift+F11 (Step Out)
F5 (Continue)
Shift-F5 (Stop)
I had this problem but was able to resolve it by enabling the Command Centre setting as below from the VS code settings:
Look for “debug.toolBarLocation”
Debug: Tool Bar Location
Controls the location of the debug toolbar. Either floating in all views, docked in the debug view, commandCenter (requires Window: Command Center), or hidden