From release 2.3 we have added Episervers new form tool. The old xform will at 15 December 2017 be closed down, so you should start to use the new form as soon as possible.
All new functionality will be built in the new tool. We will probably not fix bugs in the old tool.
I recommend that you install the right pane. It will make it easier to create new forms.
Click on the cogwheel in the upper corner of the pane. Choose Add Gadget.
Choose Form Elements.
You could also choose to add the Forms tool, but I usually works with the forms directly on the page.