Hi @SihyunLim,

LTI integrations in course navigation are either enabled or disabled, and that applies to all users who can see the LTI.  Unlike built-in items where teachers can see items that are disabled for students, LTI items disappear for teachers too.  While I agree that some consistency with other areas of Canvas would be nice, I don't feel like this is an area we're going to see Instructure make changes to any time in the near future.

I hope the info helps, even if it's not the answer you were hoping to get.

-Chris