I use tab to expand code templates.
I have several custom code templates that stop at a var where one can enter data then hit enter to go to the next var until all the vars are modified.

An example, although not useful in this situation, is:
sw<TAB>

expands with the cursor highlighted over VAR:
        switch (VAR)
        {
            case value1:
                
                break;
            default:
                
                break;
        }

Type:
St<TAB>

The cursor advances to value1 highlighted and leaves St in the previous location instead of expanding the code template to String.

Like I said, this isn't a useful example, but it a default template that demonstrates the problem.  I have templates that expand to where I need one of a few other templates at a highlighted Var that needs changed and I can no longer use the templates in Netbeans 8.0, where in all the previous versions I have used worked.