I've been struggling with the same issue. Tried on Huawei Nova, Samsung Galaxy S6, Samsung Galaxy S9, Samsung Tab A, Sony Xperia ZX and neither reacted to touch. Indeed, it's quite strange, because nothing ibside the layout can be tapped, but outside it lets you double tap for adding an object. Though one cannot select the object once the instance is onto the layout. It is not possible even to scroll the screen.
Did you manage to post the bug report? Did you get some feedback?