The phaaryl megalith loot is disabled after returning to town

Steps:
1. Activate Pharyyl Megalith bosses
2. Kill all bosses without opening "loot runes"
3. Go out from boss arena
4. Teleport to hideout
5. Come back
6. Try to open runes with loot

All runes are not openable and you lost rewards from all bosses except for last pair.

I have same bug, this surely isn't intended behaviour. I opened only two runes, then decided to kill the rest bosses in one go. Went to hideout and came back to empty my inv, now i have 8 loot runes that i can not open :(