Hello, not sure if this has been mentioned, but you have Goblins as Medium, and Volo's says Small. (ver 2.26)
Thanks for an awesome tool!
Goblins are Small according to Volo's, however their Speed is the same as Medium sized creatures (30) - the same applies to Kobolds.
The main part of the sheet (directly below where you enter the race) shows the correct size, however both goblins and kobolds show as medium on the Character Details panel.