Updating isis/css/template-rtl.css from .less files

The commit at https://github.com/joomla/joomla-cms/commit/37fe553eab581e3d62116ad2a6c753aaac16d4ec updates the template.less, but forgets to recreate template-rtl.css which uses template.less. 
Please run a "php build/generatecss.php" after every change in .less files!