• Extension version: 0.2.1
• VSCode Version: 1.28.2
• OS: macOS 10.14

Steps to Reproduce:

1. View PR in overview view
2. Triple click title and copy text, or manually select and copy title

The copied text includes the "Checkout" button text at the end.

There is an extra space as seen from the selection after the last ). If you do not include the space, "Checkout" is not included in the selection.