Function parameter hints get offset if a string argument has a comma in it.

[BscotchSeth]

The parameter hint helper seems to be using all commas in your function arguments, including commas in strings. This causes the hint helper to get offset. Example:

function do_stuff(a, b, c) {}

do_stuff("What, me?", "No!", 2);

If you click into the second argument slot, it will show that you're in the third (because there is a comma in the first argument).

[adam-coster]

This is caused by the super-simple logic currently in use to determine where you are in a function signature. Until I've replaced the parser we're just kinda stuck with this, but I've added this issue to the Parser Upgrade milestone!

[adam-coster]

Resolved in the upcoming release!