Colored text on signs distorted in North and South directions

Colored text on signs is distorted when the sign is facing either NORTH/SOUTH. When the signs are facing EAST/WEST, the green text is perfectly readable. (I have attached screen shots of both directions)

I have tried at multiple times of the day to make sure it wasn't just weird shadows and I have confirmed it is not that.

I know this is not a huge issue but the green text is extremely hard to read in the EAST/WEST directions and it did not used to be like this. Thank you.