"Copyright" and "version number" texts in the start screen have unusual dark border around them

If you join preview 1.20.0.20, you can notice that the Copyright and version number texts now have a unusual dark border around them. This issue seems exclusive of 1.20.0.20 and does not affect any versions before it.

Stepts to replicate

1. Join preview 1.20.0.20 and look at the "Copyright" and "version number" texts.
2. If possible, join any other version before it (Like 1.19.73 or 1.19.0.84 preview)

Expected behavior

There aren't any darker border around those texts.

Actual behavior

Actually, there is, giving a weird look in the start screen.