ETOPS SigWX chart issues

Recently it was noticed that some SigWx charts do not line up correctly on the map. Some charts do, others don’t (see images below).

After some investigation I noticed the problems is related to the generation of the charts by AWC.
Unfortunately this is not in my control, and can not provide a fix at this moment. I will query AWC regarding this issue, and hopefully we can come up with a solution.