Within my block.html.twig, I'm preventing extra markup by doing the following if statement. It's hacky, but it's what core gives us.
{% if content|render|striptags('<drupal-render-placeholder><a><img><hr><br><iframe><video>')|trim %}
The code above is adapted from https://www.lullabot.com/articles/level-your-twiggery#checking-field-is-...
Unfortunately, this breaks the XB component placement, as XB adds a DIV with data-xb-region attribute.
It would be nice if the template could know it's rendering via XB, or if there's a better way to do this.
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Hey @mherchel! :) Sorry to hear you're having a hard time with XB.
Isn't this a different form of 🌱 [meta] Themes improperly check renderable arrays when determining visibility Needs work ? 🤔
Also: preview-awareness already has an issue: ✨ Consider adding "in_preview" var to components Active .