SE did acknowledge it as a problem and *tried* to address it - but their solution hardly addresses the problem effectively. Seriously, among other things, the lag allows one to cast non-instant cast spells while moving?? SE doesn't see this as a problem? It's like...
/cast Cure
/start move
/end move
/target healed by Cure
???????
In alot of mmos, it's
/cast Cure
/start move
/cast terminated
/end move