iMacros working on 41.0 Firefox versions but not in 44.0

Hi,

iMacros stop working in Firefox as whenever I click on any button it won't respond. Anyone can help me to solve this issue. I also attached the gif screenshot of the issue

iMacros Version: VERSION BUILD=8871104 RECORDER=FX
OS: Windows 7 64BT
Firefox Version: 44.0b1

Thanks