I have looked at other answers, and there is no problem in my path or my xml file I believe, In my own theme I am extending the blank theme and the blank theme did not contain any layout/default.xml so I added it from the luma theme and making changes there did take effect on the page.
<?xml version="1.0"?>
<!--
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
-->
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<body>
<referenceContainer name="header.panel">
<block class="Magento\Framework\View\Element\Html\Links" name="header.links">
<arguments>
<argument name="css_class" xsi:type="string">header links</argument>
</arguments>
</block>
</referenceContainer>
<referenceBlock name="catalog.compare.sidebar" remove="true" />
<referenceBlock name="sidebar-additional" remove="true" />
<referenceBlock name="logo">
<arguments>
<argument name="logo_img_width" xsi:type="number">148</argument>
<argument name="logo_img_height" xsi:type="number">43</argument>
</arguments>
</referenceBlock>
<referenceContainer name="footer">
<block class="Magento\Store\Block\Switcher" name="store_switcher" as="store_switcher" after="footer_links" template="Magento_Store::switch/stores.phtml"/>
</referenceContainer>
<referenceBlock name="report.bugs" remove="true"/>
<move element="copyright" destination="before.body.end"/>
</body>
</page>
I am placing my default.xml file in /app/design/frontend/vendor/mytheme/Magento_Theme/layout/default.xml
Where vendor is my own vendor name, I have tried to make errors in the xml but no errors come up in the logs, seems as if Magento does not find my default.xml
Might be unrelated but the pub/static folder should contain a copy of my theme, but there is no /Magento_Theme/
folder there, I am assuming it should be there.
For a coworker doing the exact same procedure as me it worked fine, but instead using Magento-Luma as parent theme.
