Activation of JXCore causes Index error 404 (Google Search Console)

Hi,

The search console displays a 404 error (page not found) for the start page (domain.tld/).
The page can be accessed without any problems – just does not appear in the serps.

For all other subpages indexing is possible without problems and they also appear in the serps.

–> By exclusion principle I found out that the problem is caused by the JupiterX core plugin.
If I deactivate it, the indexing of the start page is accepted.

Besides leaving the plugin disabled I am looking for a real solution.

Hope you can help.