Suppose you have the following in a note:
[One] (#one) <- remove the space in "] (" for the link to work.
[Two] (#two)
[Three] (#three)
### One
text
text
text
text
text
text
text
text
### Two
text
text
text
text
text
text
text
text
### Three
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
text
On Joplin for Desktop (PC) v1.0.170 if you click on any of the links at the top it will bring you to the associated header. On iOS v10.0.37 when you tap the link the screen will go to the right header, but will immediately jump back to the top of the note. It happens so fast that it just looks like the screen flashes.