A pause is a stable foundation.
Timing a layer should remain a small game, not a reason to stay after it stops being enjoyable.
Watch without rushing a placement
Let the slab make another pass if you are not ready. You are not paying for time, and there is no advantage you must purchase before trying again.
Stop the movement before leaving
Use Pause when changing tasks. Although the game pauses when hidden, a deliberate stop makes the break clear. A page reload will not restore the tower.
An eight-layer goal is enough
A completed tower does not demand a new one, and a miss has no financial cost. The gift imagery is a celebration scene, not a claimable reward.
Report a timing issue narrowly
Mention whether you used Place layer, Space or Enter and whether the scene had been paused. That gives useful context without sharing private documents.
A clear way back
Read the controls before returning, or leave the activity for another time.