I am having a very odd problem, I first noticed it with the Camera App, but it also happens with the Facebook App, News App, Skype, OneDrive, Sport. (But IE, Phone, SMS, Store seems to be OK)
When I click on one of these apps on the start screen, the display goes block, then the start screan is shown again.
I have done a soft reset (hold down the volume down and power buttons, turn off, then turn on.) and it does not change anything.
Microsoft Lumia 535 OS Version 8.10.14234.375
Sorry about the bad tagging, but I can't work out the tag to use.