Before/After is not working in catalog_category_view_type_layered.xml inside sidebar.main?

Question

I am trying to add a string at the top of the product details page navigation referenceContainer name="sidebar.main" but the string is coming after product Filters.

How can i change or move my block at the top of the filters section or sidebar main, as i have tried so many ways but no luck as i added below.

<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
        <referenceContainer name="sidebar.main">
          <block class="I95dev\Categorysearch\Block\Index\Index" name="index_index" template="index/index.phtml" before="-">
            </block>
        </referenceContainer>
</page>

Can any one help me on this.

Answer 1

It's because the layered nav is also set to before="-", the fix is to move the layered nav so it displays after your new block.

<move element="catalog.leftnav" destination="sidebar.main" after="index_index" />

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Old Answer

It's likely happening because the product filters also have before="-" set, so both are fighting to display first. I think setting your block to display before the product filters (name is catalog.leftnav) will fix it, like so:

<block class="I95dev\Categorysearch\Block\Index\Index" name="index_index" template="index/index.phtml" before="catalog.leftnav" />

~~Or~~

<move element="catalog.leftnav" destination="sidebar.main" after="index_index" />

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~~I'm not sure if this matters but I usually prefix the template with the module so the template would be:~~

template="I95dev/Categorysearch::index/index.phtml"