Selections have become somewhat confusing

[Tyriar]

I've noticed it's harder to tell what's selection, must have been changes in core?

Looking into it, the main problem is word highlight applying some time after selection which is a bit confusing. I'm trialing this which seems like a better configuration (in Sapphire):

      "editor.wordHighlightStrongBackground": "#0000",
      "editor.wordHighlightStrongBorder": "#399ef4",
      "editor.wordHighlightBackground": "#0000",
      "editor.wordHighlightBorder": "#399ef4",
      "editor.selectionHighlightBackground": "#399ef440",
      "editor.selectionBackground": "#399ef480"

This moves word highlight to the border and makes strong (definition) the same as normal (reference). Additionally it makes selection brighter than selection highlight, I'm not sure why it was like this, I may have changed it to give contrast in some case which inverted them.

[Tyriar]

Also a relatively new addition is to flash the symbol briefly when you go to it, this is particularly useful when you go to the same symbol (eg. variable definition is the only reference). This would remove the background flash and just flash the blue focus color:

"editor.symbolHighlightBackground": "#0000",
"editor.symbolHighlightBorder": "#399ef4"