Well, the version shouldn't matter. 

So I opened my launcher at 10:20pm 2022-12-07. I went to the JAVA edition launcher inside the MC launcher. The background weren't matching the version, meaning not up to date.

Observed results:

The background was the Caves and Cliffs Part 2 background.

Expected results:

Either to be the Wild Update Background or the new 1.19.3 Desert Update Background.

How to reproduce:

[It only happened once, next time I promise to take some screen shots immediately.]