A client’s editors kept breaking custom page layouts. October’s Gutenberg releases fix that with content-only editing for patterns, plus the Terms Query block and Block Bindings improvements.
A client wanted a custom mini-cart block inside their nav menu. Here is how to extend the WordPress Navigation block the right way, using the blocks.registerBlockType filter to add your own blocks to allowedBlocks instead of fighting it with CSS.
The new Accordion block in WordPress 6.9 works but ships unstyled. Here is how to style it properly: set base styles in theme.json, then add a block stylesheet with wp_enqueue_block_style() for hover and open states instead of piling on custom CSS.