BUFU1610

So, I plowed through everything now that I have time for this and I found that a wp_title filter in my theme’s functions.php caused the problem. Here is the code:

function brnhmbx_wp_title( $title, $sep ) {
	if ( is_feed() ) {
		return $title;
	}

	global $page, $paged;

	// Add the blog name
	if ( !is_customize_preview() ) {
		$title .= bloginfo( 'name', 'display' );
	}

	// Add the blog description for the home/front page.
	$site_description = get_bloginfo( 'description', 'display' );

	if ( $site_description && ( is_home() || is_front_page() ) ) {
		$title .= esc_html( " $sep $site_description" );
	}

	return $title;

}
add_filter( 'wp_title', 'brnhmbx_wp_title', 10, 2 );

Is it the fact that they used bloginfo() in the blog name part instead of get_gloginfo()?

BUFU

I have to take back everything I wrote in the answer before. It happened when I first checked, but now I wanted to confirm and now the source only says
2travellers2travellers
That is literally everything there is in the source.
And it doesn’t matter what kind of post I try, they all just have that.

Any idea how that might happen?

BUFU

Oh, and I checked back by deactivating all other plugins (the theme has one slider plugin which cannot be deactivated, but all the others were) and it still blocks the preview… :/
My theme is Frida by Burnhambox, if it’s any help.