On Monday, August 26th 9:59 PDT, /u/EnricoDL discovered that they were getting lucky drops of Rainbow Orbs in the daily Master Awakening Labyrinth. A bit of testing proved that it wasn't luck, but a 100% drop rate for Rainbow Orbs!

EnricoDL shared his finding on the Magia Record Subreddit and the news quickly spread:

Some people were able to get over a hundred orbs, using any AP potions at their disposal, even gem refills.

Of course, this was a bug and bugs get patched. The guarantee was fixed on the same day at around 19:00 PDT.

Since this disparity in rainbow orbs, the most valuable and partially time-gated farmable item, could definitely lead to inequality between those who farmed and those who didn't, a solution was announced: