I recently moved from a 2017 macbook pro to a 2018 macbook pro with a configuration like this:
# Works perfectly MBP 2017 -> USB C -> Displayport -> Dell Ultrasharp U2415 # Red / blue font discoloration MBP 2018 -> USB C -> Displayport -> Dell Ultrasharp U2415
On the 2017 MBP the colors work perfectly, but on the 2018 MBP, my letters arbitrarily turn red or blue. See picture below taken with an iPhone. What's going on?
- Display calibration (basic and advanced) makes no difference
- Monitor calibration makes no difference
- When dragging a window, the red/blue/black changes in the characters
Here's a video of the effect on this question if the example below is to blurry.
Actual (taken with an iphone cam, ignore the grid, but notice the red and blue in the letters) :
Expected (yes a screenshot, but the text should be just plain black):