I don't know if it's just me, but in both PvE and especially PvP, Glaive hit registration feels like it's incredibly inconsistent. Most times I'll deal damage and get shield energy, but sometimes I deal damage and get no energy, sometimes I get energy but deal no damage, and sometimes the shot hits but deals damage and returns no energy, with the 4th outcome being the most common of the latter 3.
I hope that this can be improved upon within time, it can really be quite detrimental at times.
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There's even incredibly rare occasions where the shot goes through an enemy while hitting them, and that same shot hits a second enemy as well.