CiviCRM causes session hang

At least for me, CiviCRM's session is locking for Wordpress's REST API and Loop back requests causing them to timeout. I first noticed this on the Wordpress Site Health check. Wodpress installs w/o CiviCRM or with CiviCRM disabled work fine.

WordPress Core does not use sessions. All "user state" is managed via cookies. Since v4.9, plugins using sessions in WP plugins can cause problems. A good explanation of the issue can be found here.

The post there suggest passing the 'read_and_close' flag to session_start, but I have no idea what consequences that would have for CiviCRM.

Any thought appreciated.

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