I have a beacon that is set up 9x9, 7x7, 5x5, 3x3 with the haste effect on it (yes, the beacon is active), and a netherite pickaxe with efficiency V on it, but mining with haste is no faster than just mining with efficiency V. I thought we should be able to instamine stone, but have not been able to do it.

This bug has been in the game through multiple versions for me on Bedrock Edition for the Xbox One.