This happens when using the Wizard to drag over new form items, it only drags the title and does not anchor any form elements to the form.
NOTE: Joomla! 1.5.23 together with ChronoForms V3.2.0 have been used when error occured.
Check if the MooTools Upgrade Plugin is enabled in your Joomla! installation, disable it when enabled and the problem will be fixed, this plugin enables MooTools 1.2 and MooTools 1.1.2 is used by this version of ChronoForms