IE Logo – Permanent fix?

But as you can see, in customizr/inc/class-header-header_main.php lines 151-154:

if ( @getimagesize($logo_src) ) {
				list( $width, $height ) = getimagesize($logo_src);
			}

so those width and height should be set with the return values of that php function. And this is done server side, so not an IE issue.
I think that for you, and for all of you who have this issue, that if is skipped ( @getimagesize($logo_src) returns false )
The reason? Dunno.
What happens is, because of that problem width and height become ” and IE then interprets them as you said. But the problem is upstream.
I’ve downloaded your gif logo, and tested it in local, and I can see width=250 height=100 in the page source (without change class-header-header_main.php), and of course works with IE (version 8 on an old xp :D). What happens if you revert your changes and look at the image width and height, in the source page, with a different browser?

Reverted changes as you suggested and get the following source code:

Google Chrome (Mac):

<a class="site-logo" href="https://www.portcullisconsulting.co.uk/" title="Portcullis Consulting | Creative technology driven by business insight"><img src="https://www.portcullisconsulting.co.uk/wp-content/uploads/2014/05/Logo-with-Drop-Shadow.gif" alt="Back Home" width="" height="" style="max-width:250px;max-height:100px" /></a>

Firefox (Mac):

<a class="site-logo" href="https://www.portcullisconsulting.co.uk/" title="Portcullis Consulting | Creative technology driven by business insight"><img src="https://www.portcullisconsulting.co.uk/wp-content/uploads/2014/05/Logo-with-Drop-Shadow.gif" alt="Back Home" width="" height="" style="max-width:250px;max-height:100px" /></a>

Safari (Mac):

<a class="site-logo" href="https://www.portcullisconsulting.co.uk/" title="Portcullis Consulting | Creative technology driven by business insight"><img src="https://www.portcullisconsulting.co.uk/wp-content/uploads/2014/05/Logo-with-Drop-Shadow.gif" alt="Back Home" width="" height="" style="max-width:250px;max-height:100px" /></a>

So, I guess that Safari, Chrome and Firefox manage to display the image without the width and height specified, but IE 9 on Windows 8 doesn’t.

Don’t use IE myself but I guess there are still a lot of unenlightened individuals who do!

FYI – I’m hosting site on 1and1 servers (Linux) and installed WP via FTP, not the one-click install offered by 1and1 Control Panel.

Mine are sizeless too.

Also, if you change the code so that the $logo_src is incorrect, the page takes forever to load (could be the cause of problems with logo in the past). php’s @ is described as “dog slow” here.

I wonder how we could improve this tiny bit of code without using the @.

We’ve got this far in the function to know the file exists and it’s a valid image file. Under what circumstances would getimagesize not work?

@machound

Wanna try if this works for you?
Replace lines 147 to 173 ( $width='' …. );) with this:

$logo_size    = '';
//gets height and width from image, we check if getimagesize can be used first with the error control operator
if ( @getimagesize($logo_src) ) {
    $logo_size = getimagesize($logo_src)[3];
}
?>

<div class="<?php echo $logo_class ?>">

    <?php
    do_action( '__before_logo' );

    printf( '<a class="site-logo" href="%1$s" title="%2$s | %3$s"><img src="%4$s" alt="%5$s" %6$s %7$s /></a>',
        apply_filters( 'tc_logo_link_url', esc_url( home_url( '/' ) ) ) ,
        apply_filters( 'tc_site_name_text', __( esc_attr( get_bloginfo( 'name' ) ) ) ),
        apply_filters( 'tc_tagline_text', __( esc_attr( get_bloginfo( 'description' ) ) ) ),
        $logo_src,
        ( 'Back Home' , 'customizr' ),
        $logo_size,
        ( 1 == $logo_resize) ? sprintf( 'style="max-width:%1$spx;max-height:%2$spx"',
                                apply_filters( '__max_logo_width', 250 ),
                                apply_filters( '__max_logo_height', 100 )
                                ) : ''
    );