2.6.7 was dropped since there are some major upgrades to the features (and performance) that warranted a new branch. After 2.6.6 the next release will be 2.7.1 which is currently in beta (mcebuddy doesn’t do .0 releases so you won’t see 2.7.0).
This issue was fixed so try out the latest 2.7.1 beta and if you’re facing the same issue post back here and upload your original video and logs to the server.