Just updated to this & lost my custom toolbar space.  (I'd added stuff below the drives/Docs etc toolbar).
Any way to recover that extra space?  
Can't seem to see how to do it.  ...or am I half asleep & have forgotten how to do it?  

I tried reloading my saved layout config without effect.
I can add back the custom commands but this tool area won't move from the end of the input cmd/path field.  
