Multishot crossbows loaded in survival or adventure mode show their secondary charged projectiles on a separate line in the tooltip

This happens because the secondary arrows are intangible (i.e. can’t be picked up in survival mode), while the primary projectile isn’t. By contrast, when the crossbow is loaded in creative mode, all three arrows are intangible.

So this may be intended, but it makes the tooltip seem wrong to the average survival player since it isn’t clear why there are two separate lines, so I will confirm it to see what Mojang’s stance on the issue is. Personally I don’t think the secondary arrows should be stored as charged projectiles at all, and I made a post on the Feedback Discord detailing how this item component should work; please give it an upvote if this issue bothers you.

(Also note that after firing a Multishot bow, only the central arrow is retrievable in survival, regardless of any charged_projectiles component that may be present. This hardcoded behavior contrasts with the behavior for crossbows, where it is possible to make the secondary projectiles retrievable via data modification. My suggestion linked above would make crossbows work just as bows currently do and allow for overriding the default behavior for both weapon types.)

Another note: the 25w06a changelog says:

Tooltips for Fireworks and Crossbows now show a compact form of multiple repeated stars or projectiles that are identical

So the in-game behavior is in a sense correct because the charged projectiles aren’t actually identical, but most players would be surprised to learn that when you load an arrow into Multishot crossbow you’re actually loading the arrow and two other arrows whose data is slightly different than the main one. Imo, all the more reason why the enchantment should be canonically changed to “you load one arrow and it magically splits into 3 at the moment of firing.”