Hello,
In this case, please add this code in Theme Options > Custom css or in style.css file of your child theme:
.progress-button.state-success .content::after {
background-color: transparent;
height: 22px;
vertical-align: middle;
transform: translateY(-4px);
}
.progress-button.state-success .content {
color: transparent;
}
.progress-button[data-style="shrink"][data-horizontal].state-loading {
border-radius: 0;
}
Regards