Found a regression in committed 8ed1876 (fix active checkbox; add template to active checkbox)
Issue #53
new
If label of the checkbox is applied $labelOptions with .control-label { text-align: right } and $formLayoutHorizontalControlClass, the label text is in a col-lg-2 label and align right.
<div class="checkbox">
<input type="hidden" value="0">
<label class="control-label col-lg-2">
<input value="1" type="checkbox">
TEXT
</label>
</div>