Version numbers when selecting a world are broken

Here is how to get this glitch:

1. Open Minecraft 18w01a.
2. Click [Singleplayer]
3. Find a World. It will show up as this (this is an example with 1.12.2 worlds): TextComponent{{text='1.12.2', siblings[], style=Style{hasParent=.

Yeah, Mojang, pls fix this.