Anyone else noticed total screen freezes when using Chrome or Whatsapp and there is say an active Gif that the screen sometimes freezes, (can not be scrolled or back flicked) ??

(gestures turned on and running 58.0.A.22.21 UK unlocked Sony sold direct...  which I know is likely to be updated this week as last week O2 & EE had a new version "58.0.A.28.25" - but as Sony does not have a "what has been changed" advice with firmware updates I will assume it is just a security patch and not any new features or bug fixes. )