Hi!
It’s because layer slider loads responsively and the window resize event is not fired afterwards. This is a javascript loophole, but you can try to add the following script to your site header or footer, it should “mimic” the window resize event:
<script>
jQuery(document).ready(function($){
var scope = $;
if (typeof aspjQuery != 'undefined')
scope = aspjQuery;
setTimeout(function(){
scope(window).resize();
}, 3000);
});
</script>
This code will basically wait 3 seconds, then execute a fake window init event, which should restore the search box input width in the layer slider.