Jupiter square Neptune (orb 1.6°) creates concrete friction between the two planets. The orb is very tight; this describes a stable character pattern more than a passing reaction.
Here, Jupiter in Libra in House 11 brings personal fulfillment, confidence, encouragement, and broader horizons into House 11 (networks, audience, groups, ideas, ideologies, political beliefs, and collective projects), with Libra style (relationship, balance, negotiation, and sense of form); Neptune in Cancer in House 8 brings imagination, image, popularity, collective moods, and inspiration into House 8 (sexuality, shared power, crisis, and invisible bonds), with Cancer style (memory, protection, belonging, and family sensitivity).
Concrete friction: this aspect creates tension between confidence, promise, ideal, image, and vagueness: Jupiter pushes toward a wider personal horizon, while Neptune can make the direction too blurred or fantasized. House 11 (networks, audience, groups, ideas, ideologies, political beliefs, and collective projects) is in friction with House 8 (sexuality, shared power, crisis, and invisible bonds); this can create blockage, inhibition, overreaction, or repeated conflict between the two fields.