My WordPress Website Unsaved changes are lost on reload PHP 8.3 WP latest

Booting WordPress Playground

done Mounting browser storage
done Loading WordPress core
now Applying selected route or settings
next Returning to the live site

Start, Save, Resume

Route inputs and browser-local identities live here.

Unsaved Playground This session is not saved to browser storage. Saving creates a resumable row below; reloading before saving discards local changes.

Start a new Playground

Each route asks for the input it needs.

Vanilla WordPress

clean site

Boot the current latest WordPress with default content.

WordPress PR

core

Gutenberg PR or branch

plugin

From GitHub

repo import

Blueprint URL

json

Import .zip

existing export

Choose a previously exported Playground ZIP

Featured blueprints

Unsaved Playground not stored

This is an Unsaved Playground. Your changes will be lost on page refresh unless you save this site locally.

WordPress Version

Include older versions

PHP Version

Language

Allow network access Create a multisite network

Apply & Reset is destructive. Resetting clears the current WordPress database, uploads, file edits, and any unsaved browser-only work. Save first if this identity should survive reload.

Files

▾ /wordpress
▸ wp-admin
▾ wp-content
style.css
functions.php
▸ wp-includes
wp-config.php
index.php

/wordpress/wp-content/themes/twentytwentyfive/style.csseditable

/*
Theme Name: Twenty Twenty-Five
*/

.wp-site-blocks {
  min-height: 100vh;
}

.playground-note {
  background: #fff6d9;
  color: #111;
}

Bundle

blueprint.json
landing-page.html
assets/

/blueprint.json

Database management is an early access feature. WordPress Playground emulates MySQL using SQLite. The database tools are a work in progress and are shown here for inspection.

Table	Rows	Last touched	Status
wp_posts	12	10:18 UTC	ready
wp_options	184	10:18 UTC	ready
wp_users	1	10:17 UTC	ready
wp_terms	8	10:16 UTC	ready

[21-May-2026 10:18:21 UTC] PHP Warning: file_get_contents(/wordpress/wp-admin/css/view-transitions.min.css): Failed to open stream.

[21-May-2026 10:18:20 UTC] PHP Notice: wp_maybe_inline_styles was called incorrectly for wp-block-library.

[21-May-2026 10:18:19 UTC] request GET /hello-from-playground/ 200 132ms

[21-May-2026 10:17:58 UTC] PHP Fatal: Example plugin activation failed in sandboxed route.