I have also had this same problem, I put one bottle down and I cannot put the rest down. I even tried leaving for a bit and gained about 5 or 6 levels since the 9th of this month and still.... It will not open my inventory to put the bottles down. All that happens is the Hot Bar (because im using a controller on my pc) flashes and nothing else. I even tried putting the Key Items in my hot bar and that of course didn't work. I really want to continue my Main Story. Any who great game and I look forward to hopefully a prompt fix, Until then i guess I'll hunt down dungeon quests and join some FATES. tyvm.