On a few rare ocassions, the vibrate that occurs when the user makes a mistake, doesn't work. If I've made a mistake, the red bar across the top of the screen (for "Type Out") increases, but there is no vibration.
Relaunching the application doesn't resolve it.
The only "solution" I've found is to restart my phone.
I'm running version 5.4.3 of Verses on an iPhone X that's running iOS 14.4