• VSCode Version: 1.4.0-insiders
• OS Version: OSX

Steps to Reproduce:

1. Create file with:

test
TEST
Test
aTesTer
test-123
test234
test

1. Put cursor at position 1:1 and press CMD+D 7 times
2. VS Code selects:

It should only select next matches using case sensitivity and whole words

Here is Atom result for the same: