TWIG dump() – Render issue fix (Shopware + Symfony). Stylus CSS can be used to hide code but show the dumps, while being attentive to this happening.

Twig-Dump-Stylus.css

/**
 * TWIG dump() sometimes leads to visible injected code shown in plain text.
 * Hide script/ style tags output, but not completely, to be aware of this happening.
 * 
 * Maybe due to some Syntax error occurring in some templates.
 * This hides the boilerplate and just shows the debug.
 */
script,
style {
  border: 2px solid magenta !important;
  display: inline-block !important;
  overflow: hidden !important;
  width: 5px !important;
  height: 5px !important;
}