Steps to reproduce:

1. Configure Recommendation
2. Login to Ibexa DXP using REST (session auth or JWT)

Result:
For JWT you can observe that a new session is started (which should not happen)

The issue is caused by this listener: https://github.com/ezsystems/ezrecommendation-client/blob/master/src/lib/Event/Listener/LoginListener.php#L72

Possible solution:
The scope of the mentioned listener should be limited to form login and front-end SiteAccesses login only.