the code is appearing in the tab title, because you have a <title>
element with that code in between it.
I’m not sure why it would appear after you activated a photo gallery plugin. Can I ask what plugin that was? I’d like to test it out on my localhost installation.
Edit:
I just did an inspect element, and you can see what I am referencing above right here:
<title>
<div class="menu-navigation-container"><ul id="menu-navigation" class="menu"><li id="menu-item-258" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-258"><a href="https://tintedadvertisinggraphics.com/window-graphics/">Services</a>
<ul class="sub-menu">
<li id="menu-item-259" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-259"><a href="https://tintedadvertisinggraphics.com/window-graphics/commercial-window-logos-houston/">Logos</a></li>
<li id="menu-item-298" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-298"><a href="https://tintedadvertisinggraphics.com/window-graphics/wall-mounts-graphics-houston/">Wall Mounts</a></li>
<li id="menu-item-297" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-297"><a href="https://tintedadvertisinggraphics.com/window-graphics/glass-signs-houston/">Glass Signs</a></li>
<li id="menu-item-296" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-296"><a href="https://tintedadvertisinggraphics.com/window-graphics/hanging-signs-houston/">Hanging Signs</a></li>
<li id="menu-item-295" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-295"><a href="https://tintedadvertisinggraphics.com/window-graphics/wall-door-signs-graphics-houston/">Wall & Door</a></li>
<li id="menu-item-293" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-293"><a href="https://tintedadvertisinggraphics.com/window-graphics/interior-graphics-houston/">Interior Graphics</a></li>
<li id="menu-item-292" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-292"><a href="https://tintedadvertisinggraphics.com/window-graphics/exterior-graphics/">Exterior Graphics</a></li>
<li id="menu-item-291" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-291"><a href="https://tintedadvertisinggraphics.com/window-graphics/storefront-graphics-houston/">Storefront</a></li>
<li id="menu-item-294" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-294"><a href="https://tintedadvertisinggraphics.com/window-graphics/conference-rooms-graphics-houston/">Conf. Rooms</a></li>
<li id="menu-item-290" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-290"><a href="https://tintedadvertisinggraphics.com/window-graphics/marker-board-glass/">Marker Board Glass</a></li>
</ul>
</li>
<li id="menu-item-260" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-260"><a href="https://tintedadvertisinggraphics.com/gallery-window-graphics-houston/">Gallery</a>
<ul class="sub-menu">
<li id="menu-item-261" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-261"><a href="https://tintedadvertisinggraphics.com/gallery-window-graphics-houston/others/">others</a></li>
<li id="menu-item-262" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-262"><a href="https://tintedadvertisinggraphics.com/gallery-window-graphics-houston/medical/">Medical</a></li>
<li id="menu-item-263" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-263"><a href="https://tintedadvertisinggraphics.com/gallery-window-graphics-houston/energy/">Energy</a></li>
</ul>
</li>
<li id="menu-item-255" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-255"><a href="https://tintedadvertisinggraphics.com/commercial-window-film/">Films</a></li>
<li id="menu-item-256" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-256"><a href="https://tintedadvertisinggraphics.com/contact/">Contact</a></li>
</ul></div>
Tinted Advertising Graphics
</title>
For whatever reason that plugin you installed is wrapping your navigation in a <title>
tag.