Well a good one here being that I had sent back my 3 QL 120 fans because I had a broken wire on my Node Core which in that case I had to send them back as a part of a warranty swap. Well, anyways, I still had my 1 QL 120 fan as an exhaust in the back of my Lian Li 011XL Case, so I decided to purchase a 3 pack SP120 Pro RGB with the Node Core while waiting for my other Node Core and replacement QL120 fans. When I linked the QL120 fan and the SP120 Pro RGB fans to the same Node Core, the QL fan mode in iCue worked the same. Now in my spare build housed in the Corsair 200R, I have a Commander Pro with 6 fans attached while I have 3 of the same SP120 Pro RGB Fans I took out of the Lian Li Case once I got my replacement QL120 fans back along with the Node Core along with the ML120 Pro RGB Fans that came with the new H150i Pro Cappelix AIO I installed into my Lian Li Case (My Main Rig) into my spare Corsair 200R case which has inside no Motherboard Controlled RGB Ports at all. I set the mode into the SP RGB Pro Mode, and the ML Pro Fans work in unison with the SP Pro RGB Fans just fine. Obviously this was only done because I used the existing LL120 fans to work with the Corsair Commander Core in my main rig.
To sum it up, I never experienced this until I installed my SP120 Pro RGB, and paired it with the QL120 RGB Fans.