WPBakery Page Builder

WPBakery’s Single Image element requests image sizes that may not exist yet. The compatibility generates the missing size, updates the attachment metadata and uploads it, so the element renders from the bucket.

WP-Stateless 4.4.3 includes this as a built-in compatibility (Compatibility tab or WP_STATELESS_COMPATIBILITY_WPB); it is not supported in Stateless mode. A standalone addon, WP-Stateless for WPBakery Page Builder, is published on wordpress.org as well. Detected plugin: js_composer.

Tested with WPBakery Page Builder 7.5.