A few months ago, Material Design guidelines added a new section entitled "Launch screens" . In this section, Google advocates how branded launch screen (aka splash screens) enhance the user experience when having a "cold" launch.
It's no secret that I've always been against branded launch but clearly pushing towards placeholder UIs or previews instead.
What happened to me this morning is another reason why splash screen should be avoided at all costs in favour of 1) an optimised launch time and 2) a placeholder UI. Here is what happened : I was using Google Maps and looked at the help inside the app. After looking at it, I pressed [HOME] and stopped using my phone. After a few hours, I had to have a look at a place so I opened Google Maps once again, closed the restored "Help" screen and BOOM : a branded launch screen displayed for half a second … Such a painful experience :(. For the quick tests I have made, this bug also affects Google+.