How can I deselect the bomb in "Keep Talking..." on Samsung Gear VR?

I have a Samsung Gear VR and downloaded "Keep Talking and Nobody Explodes" but have been unable to pass the tutorial. The tutorial instructs you to "deselect" the bomb to place it back down on the table. The accompanying diagram highlights a button just above the touchpad on the headset. On my headset, the two buttons in this place are the "Home" and "Back" buttons. The home button prompts me to quit the game, whilst the back button does nothing. (I have tried holding the back button as well as short-pressing it). Perhaps I am missing something obvious?

I'm one of the devs for Keep Talking and Nobody Explodes. We've identified this as an issue related to a change to how our game is handled by Samsung's Game Launcher app. Essentially there's a "Lock Recents and Back keys" feature that can incorrectly be applied when playing the game. We are reaching out to Oculus and Samsung to resolve this but for now we've found a set of steps that can prevent the problem:

Enable the Game Launcher app by turning it on under Settings --> Advanced Settings --> Games --> Game Launcher (it may already be on).

Then open Game Launcher and long-press on the Keep Talking and Nobody Explodes icon. Then select "Categorize as other app". After a few seconds, you can close gameLauncher and try launching Keep Talking from Oculus Home.

(Note that simply disabling Game Launcher/Game Tools, Force Stopping Game Mode, or even removing Keep Talking from Game Launcher will not stop some of Game Mode from being activated.)

If you're still experiencing an issue with the game, please feel free to reach us at [email protected]. Thanks!