MarkupList items no longer can observe focusPercent on OS 8.0

With the new 8.0 release, MarkupList items can no longer observe "focusPercent" and therefore can't handle focus properly. I tried with 7.7 and it is working there.
Is there another workaround?

SOLUTION: change the type="integer" to type="float"

<field id="focusPercent" type="integer" onChange="onFocusChanged"/>

<field id="focusPercent" type="float" onChange="onFocusChanged"/>