The Unbreakable data component applied flint and steel causes it to dissapear when used on a creeper

When testing some commands, Me and a friend found that the minecraft:unbreakable data component makes flint and steel vanish only when used on a creeper. It works fine when used on the ground or other blocks, such as campfires and tnt, but creepers make it vanish. It doesn’t seem like it breaks-there are no particles or sound effects- but it vanishes, despite it being unbreakable. This also doesn’t apply to creative mode. See the attached video for how to reproduce the glitch.