multiwindow and pop up menu functions are not working please update

[KANCHANPATEL]

multiwindow and pop up menu functions are not working 

Please solve the error

Update

[Anonymous]

did you got pie update?

[KANCHANPATEL]

yes

[Guru2]

for which model?

[KANCHANPATEL]

j8

[KANCHANPATEL]

j8 after 9 pie update

[Guru2]

press the recent app button & touch on Icon on top left of any recent app window, u will get the options & choose the desired action like this below mentioned image

[Guru2]

this one

[KANCHANPATEL]

thanks