Advanced Layout Editor in Posts shows default PAGE sidebar instead of POSTsidebr

I have followed this guide to add the Advanced Layout Editor(ALE) to my site. But… by default the POSTS show the PAGES sidebar.

When I write a new post and publish it without the ALE, the BLOG-sidebar shows up nicely. When I activate the ALE and publish, the blog-sidebar (leaving the ‘sidebar settings’ on default) does not show up, but instead it is showing the PAGES-sidebar. (and it does not show the share buttons or comments anymore, but I can add this in the page builder so that is fine…)

Is there a simple way how to fix that a posts is still seen as a post so by default it shows the correct sidebar? (instead of acting as a page )?