There's been random light sources being produced by the server whenever the chunk stops being loaded. filling the room with cobble, the breaking the cobble does destroy the light source but it return occasionally.
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Also there's been slow tick rates on the server which has been breaking things such as the pure daisy from botania where it's not converting wood/stone to livingwood/livingstone as often as it should, Bees have extremely long life spans which makes it almost impossible to breed at a reasonable pace, flowers that generate mana is not generating as fast as it should(and their internal cooldown is bugged). The slow tickrate is gaming breaking, it would help if theres a fix thanks.