Variable highlighting not working

[pgsandstrom]

Describe the bug
Before activating the vim extension, when navigating to a variable with the arrow keys, the variable and all of its uses are highlighted. When activating the extension this stops working. If I navigate to a variable by clicking on it, it still works. But navigating to it with either hjkl or the arrow keys no longer procudes a highlighting.

To Reproduce
Steps to reproduce the behavior:

1. Activate the extension
2. Navigate to a variable (any way except with mouse)
3. Notice that it is not highlighted

Expected behavior
The variable and its uses should be highlighted.

Screenshots
Correct highlighting:

Incorrect highlighting:

Environment (please complete the following information):

Extension version: 1.9.0
VS Code version: Code 1.37.1 (f06011ac164ae4dc8e753a3fe7f9549844d15e35, 2019-08-15T16:17:55.855Z)
OS version: Windows_NT x64 10.0.16299

[J-Fields]

Closing in favor of #3044