If a beacon is placed while being on a pyramid of 4 layers, and a block of tinted glass is placed directly on the x and y-axis' of the beacon beam (this can be anywhere on the axis), the tinted glass is counted as a opaque block, and stops the effects of the beacon. I only have posted this bug because tinted glass should be logically a transparent block, which should allow beacon beams through.

How to replicate:

1. Place a beacon on a 1,2,3 or 4 layered pyramid
2.  Let the beacon activate
3.  Place a tinted glass block on the same axis' as the beacon

The beacon will deactivate and will no longer shine the beam.

NOTE: I have not tested the beacon with any other layers other than a 4-layer beacon. The beacon's layers are made out of gold blocks and are not hollow. 

I only have posted this bug because tinted glass should be logically a transparent block, which should allow beacon beams through.