As for https://www.inaturalist.org/observations/21205451 (just 4 meters away) it was in a beeches, oaks, pinetrees wood, 1410 m.
Bodylenght 8,5 mm. So I exclude Porrhoclubiona (smaller species).
Recovered in its big silk shelter under some rubbish (fruit juice tetrapaks). I collected them, so I unwillingly crashed its shelter : (