Resize window on modifier + RIGHT mouse button press

After moving from linux to Mac at work, I'm trying to mimic window movement and resize using mod key + LMB/RMB using instructions here. I'm using control (^) mod key for this. For movement it works perfectly (^LMB), but I'm not able to make resize work using ^RMB. It does nothing. In all discussions I found here, only LMB was used in examples. When I tried to use for example ctrl+shift LMB, resize worked fine. Is there some problem using RMB? Is it some bug or feature?