The bug
The text information about a world (like the game mode, the cheats...) exceeds the rectangle, especially when the name of the version of Minecraft is too long and/or when the name of the world folder is too long.
How to reproduce
Load a world into a version with a long name (like 1.14 Pre-Release 1 for example)
Then, look in your list of worlds the line where there is information (such as the game mode) on your world
→ ❌ You will see that the text goes beyond the rectangle (see screenshots)
Example
Here is an example:
[media]Linked issues
is duplicated by
Attachments
Comments
Can confirm in 21w05b.
Can confirm in 1.17.1.
1.18 pre5
Can confirm in 1.19.
Can confirm in 1.19.2.
Can confirm in 1.19.3.

Can confirm in 24w34a.
[media]
Can confirm in 20w51a.