Flyout menu disappears in a sec in Ipad pro

I recently bought ipad Pro 11. 

What ever, I use Hand or Ipencil.

Everything on screen works fine, but if I need to choose some tool from the tools with flyout option,

I click/touch them, they disappear with in a sec. I can manage to be very quick to select from few tools like pencil, rectangle, etc. But its nearly impossible to select our desired color with in a second. 

The app is up-to-date, I tried to uninstall and install again. Not working.

Ipad version: 15.1

adobe illustrator version: 2.0.2