[This has occurred quite recently as of posting this bug report]
Using the TextScaled property for Text in BillboardGuis causes the font to not get scaled properly. I was unsure about this until I started looking at old screenshots/videos of my prior progress and confirmed for sure this was happening.
Additionally when you compare it against the TextScaling of normal ScreenGui you can clearly see a difference.
Here’s the placefile for quick repro:
TextScaleNotWorking.rbxl (56.3 KB)
(Comparison of UI looking different after not touching the UI whatsoever)
Here’s what it looks like currently in my game:
Here’s what it used to look like a little while ago:
Addendum, looks like this bug was already reported: