Problem while using animation util

watch this 13 sec video to clearly understand what i want to say
https://drive.google.com/open?id=1JhQTBgCdNsAgvq7BNTWS4iJmHfhrr6yO

as you have seen that when i click on menu icon first time there is no animation but when i click on menu icon second/third/forth… time then animation works perfectly

here is the blocks

i want that animation will work all time when i click on menu icon
Thanks in advance for help me out