Kit lore drops the last character in each line
example from kit.yml
"end_portal_frame 1 name:&d&k...&dGamble_Loot_Noot&k... lore:&k...&5This_box_contains&91-3|&k..._&5Loot_Noots_of_Various_Sorts.|&9GambleBox"

ingame

Seems to be a similar problem to #2962

Closed in favour of #2962. Please follow that issue for further updates on this.