.ui-thumbnail {
  border-radius: 2px;
  border: 1px solid #ddd;
  padding: 2px;
  background: white;
  line-height: 1;
  display: inline-block;

  .ui-thumbnail-label {
    font-size: 12px;
    font-weight: $ui-font-weight-bold;
    padding: 8px;
    color: #666;
  }

  img {
    margin: 0;
    padding: 0;
    display: block;
    max-width: 100%;
  }

  &.ui-thumbnail-circle {
    border-radius: 50%;

    img {
      border-radius: 50%;
    }
  }
}

.ui-thumbnail {
  border-radius: 2px;
  border: 1px solid #ddd;
  padding: 2px;
  background: white;
  line-height: 1;
  display: block;

  .ui-thumbnail-label {
    font-size: 12px;
    font-weight: $ui-font-weight-bold;
    padding: 8px;
    color: #666;
  }

  img {
    margin: 0;
    padding: 0;
    display: block;
    max-width: 100%;
  }

  &.ui-thumbnail-circle {
    border-radius: 50%;

    img {
      border-radius: 50%;
    }
  }
}

Set thumbnail to block display
Set thumbnail to block display
