Sometimes in javascript autocompletion is not working properly
I've tried with jquery to hint a function ($.post()), and it doesn't show anything
Tried to do a symbolic link the php file with .html extension, and the function appears (first I was obly to comment out the php part to have autocompletion and hint working properly)
So I tried to switch off netbeans and reopen it: in the php file surprisely the function $post() appear in himt
I don't know how to replicate the issue.

Sometimes the hint in Javascrit stop working unexpected  also regarding javascript hinting (it show "no documentation found") while writing code. In those cases I resolve launching a reformatting of the page, and hinting start working again

I'll try to trace the activities to find a way to reproduce it