Kitava's heart in lava lake map doesn't drop maps/currency

It seems like something is wrong with his heart.

I have awakening level 9 and have ran a lot of lava lakes, heart never dropped: - normal maps,
- elder and shaper guardian maps,
- synthesis maps,
- currency that drops stacked from bosses (for example 3 sextants or few horizons, etc).

I dont even think heart dropped anything but magic/rare items, which you don't even see with a strict filter, so for me heart drops absolutely nothing for some reason.

1) My friend also ran 30+ lava lakes and confirmed the problem.
2) Another friend confirmed the same thing, 60+ lava lakes completed.
3) Here is another thread with same problem
https://www.pathofexile.com/forum/view-thread/3170731