There are several wrong behaviors derived from the fact that when you click on the keyboard the imput lose the focus.
The idea under this propouse is that if you click in any point of the keyboard it must return the focus to the current input.
I propouse this change to Keyboard.prototype.init
Keyboard.prototype.init = function() {
this.$keyboard.append(this.renderKeys());
this.$keyboard.append(this.$modifications_holder);
$("body").append(this.$keyboard);
if (this.options.is_hidden) this.$keyboard.hide();
this.setUpKeys();
//INIT MOD 2018-11-01
var _this = this;
this.$keyboard.on('click', function (){
if(_this.$current_input)
_this.keep_focus = true;
_this.$current_input.focus();
})
//END MOD 2018-11-01
};