thats not a base game bug. Its a mod Bug, Specifically Ultra Testing Tools, which makes the Testing Tools more advanced. I just tested and i based on last instances of the same mod having localization issues. I reported to the Mod Dev.
The cause for this is that this item and a few others - Spellslinger, Weapon Shielding and Spirit Shielding - have a different name in the citadel_mods_english.txt file than they have in the citadel_gc_english.txt file. So if the mod references the "mods" file it will have the incorrect names