I have a brand new Blackwidow V4 X keyboard and the right Shift key is not lit when Synapse is running. I had the keyboard replaced from the shop I purchased it from thinking it was faulty, however the second keyboard shows the same issue!
Also when I use Chroma Studio; static profile; all keys white apart from the Shift key being blue, the up cursor key appears blue and the Shift key is not lit.
Configuration in Chroma Studio:

Keyboard state:

Regards,
Dave