In the image you can see that there is a cube of tinted glass (hollow from the inside) and it allows light from the corners to get into the cube in a very strange way. The slightly brighter light in the middle (near the crosshair) is also looking strange for some reason.
MCPE-226371
Vibrant Visuals tinted glass not blocking light correctly.
Open
0
I am experiencing the same issue. I have my Ocean Monument / Guardian Farm with a tinted glass roof, and I clearly cast a shadow on the floors.