Why do I sometimes see a color shift when the HDMI Receiver (RX) Core initializes?
This is a known problem that can occur when the HDMI RX Core initializes.
This problem can be worked around by resetting the HDMI RX Core and forcing the link to be re-established or by using one of the patches below.
This issue has been fixed in Vivado 2018.1 and later.
Users should update to the latest version of the IP.