I've created a theme at:
app/design/frontend/<vendor>/default
That I call my "default" theme with some base styles, that inherit from Magento Blank as it's parent.
<theme xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Config/etc/theme.xsd">
<title>Default</title>
<parent>Magento/blank</parent>
<media>
<preview_image>media/preview.jpg</preview_image>
</media>
</theme>
In the default theme, I'm using:
app/design/frontend/<vendor>/default/web/css/source/_extend.less
An _extend.less file to extend from the parent Magento Blank theme.
Now, I also have 2 different stores in Magento, so building off of the default theme, I have:
app/design/frontend/<vendor>/shop1
app/design/frontend/<vendor>/shop2
And I'm seeing that if I put in an `_extend.less` into
app/design/frontend/<vendor>/shop1/web/css/source/_extend.less
That doesn't appear to be working. The shop1 theme is using default as it's parent, and is correctly inheriting the styles of default. However, shop1 is not being extended by any customizations that I'm placing into it's _extend.less file. Am I doing something wrong here?
Thank you.