I have text that I wish to align with a red box in ArcGIS Pro 2.4.3. In the past, the workflow was to select the two items and chose "Align Left." However, there is a small gap between the text and the related selection box... that limits the ability to properly align the items. In the image below, there is a small gap between the "O" and the selection box to the left.

To highlight this gap, I have indicated the gap using the two blue arrows below:

What controls this gap and can I remove it? One more thing... all of the items are aligned to the left.
Thanks,
Roland