Created by: iamandrewluca
When changing $input-border-width, $input-height-border does not change and select.form-control custom-select custom-file will still have $input-height which is resolved from $input-btn-border-width
This will work in cases when want controls with border, and buttons without.
Temporary fix will be to override 2 variables
$input-border-width: 2px !default;
// which is
// $input-height-border: $input-btn-border-width * 2 !default;
$input-height-border: $input-border-width * 2 !default;