since an update to Facebook 2/3 weeks ago the app does not recognise the screen size, in portrait position it now shows not only the timeline but also who is on line, before it was only the timeline, also it’s very small, in landscape position it’s showing very small on only the middle third of the screen, update last night made no difference, tried all the usual, rebooting, delete and re instal the FB app etc, my iPad Pro is 1st generation with a 12.9” screen, any ideas you bright guys out there