A concrete example if it helps:
Here we see a file name SeriesRoomGrid.js being indexed:
But when I do CTRL+P to search and open that file:
So it seems that the files are being indexed correctly… but search doesn’t “see” them 
Also, I tried enabling this option of VS Code (I’ve read that for some people it helped) but it had no effect on my end:
I cannot wait to fix this, it’s a big productivity killer.
Let me know how I can help!