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;
```
4c96f58e31