I noticed that DebugStatus is a IStatusbarItem. This one is typically when you need full control over the rendering of the item, but it seems you are only using text and an icon we probably already have in our octicon set. I suggest to change this to IStatusbarEntry and use IStatusbarService#addEntry() to show and hide it dynamically. You can also update properties dynamically on the returned object.

If the icon is missing we can add it to our set. Just using icons from our octicon set ensures that they all look good when compared to each other.

//cc @misolori