But since I love javascript, I got this code that checks if the enter key is pressed even while focusing the text input, then unfocus it.
if (objects.length > 0) {
const renderer = objects[0]._renderer;
document.onkeypress = function(e) {
e = e || window.event;
const key = e.keyCode;
if (key === 13) {
renderer._input.blur();
}
}
}