Scroll Issue After Update 13.3.0

Hello,

Since the last update to 13.3.0 one of our pages lost the ability to scroll.

To fix this, I tried to add a custom.less file to the custom/theme folder as stated in the documents with simple styling *{ overflow:scroll } and I uploaded it to the module loader and installed but this didn't work for the page. I also tried to specify the className of the element instead of the wild card * and still nothing.

My next attempt was going to be to edit the .hbs file itself and just add the (overflow:scroll) to the styles on that page directly and then copy it to the location where the original is using the manifest.php copy method...

$installdefs = array (
  'id' => 'project_Scroll_Function',
  'copy' => 
  array (
    0 => 
    array (
      'from' => '<basepath>/scroll_function/authorize.hbs',
      'to' => 'custom/clients/base/views/authorize/authorize.hbs',
    ),
  ),
);

and do this through the module loader, however, I am worried this could break things. Will doing this just replace the original file or create a second file with the same name and will it cause errors?

How could I make this change, what would be the best approach to make this change without causing issues?

Thanks, Chris