Input filters are run twice when showing a view, corrupting data.

When I open a view page, the Global: Text area in the Header is run through the input filters twice. Once, while running pre_execute() on the view object, and a second time when actually executing the views display.

This is not a problem if the input filters can be run multiple times without side effects, but the filter we're using should only be run once over a portion of text - running it twice breaks the text.

My proposal is to change the function translate_string() on class i18nviews_plugin_localization_i18nstrings so that it doesn't use filter formats when doing a translation:

function translate_string($string, $keys = array(), $format = '') {
    $options = array();
    if (!empty($format)) {
      $options['format'] = $format;
    }
    return i18n_string($this->stringid($keys), $string, $options);
  }

Get rid of the $options['format']. This fixes my issue.

This could explain a number of other bug reports which have symptoms that sound like they could be caused by multiple passes of an input filter.