PrestaShop Call to undefined method FrontController::parseCMSContent() after update to 1.7.8.2

In case this can help anyone, I fixed this by moving my override into a new smarty plugin.

I created a file vendor/smarty/smarty/libs/plugins/function.get_shortcoded_content.php

I added my shortcodes in:

function smarty_function_get_shortcoded_content($params, &$smarty)
{
...
}

And in my smarty files I called:

{get_shortcoded_content content=$cms.content}

instead of:

{$cms.content nofilter}

It seems to work all fine again.