I’ve now had it with three different heroes. Two Sentinels and a Mage. The three were characters created and played before the last patch. I can’t say when I created them, I don’t remember.
I play and get XP
I get a new level
I have one new passive point available
I click on a passive node to apply the new point
The point does not apply
I have zero passive point available
→ In summary, if I gain a new level, I can’t apply the new passive point and it disappears.
Confirmed.
I played this one of these heros a bit more in the Monoliths, he got a level and I could use the new passive point. So I guess that was it.
This morning I met AluxAeterna in game, who confirmed also.