Simply Jetpacks 2: 2.2.16.1
Forge: 14.23.5.2847

After updating to the newest version of SJ2 with the new config system, I noticed that all the config comments are unlocalized in the config file.
A sample image is included:

Edit: This also is the case for the ingame config comments:

Additionally, the subcategories for the Tuning Setting category have no tooltip defined