When running Microthemer with Oxygen enabled I noticed I can only effect the breakpoint views using Microthemer but Oxygen’s breakpoint menu is deactivated. Is that meant to be the case?
No, you should still be able to change the breakpoint in Oxygen too. I suspect Oxygen have made a change to their interface that MT needs to keep pace with in order to restore that functionality. I will investigate this and release a fix ASAP.
Sorry for the slow completion on this. I was on the cusp of releasing version 7, which is now available. And it includes the fix for making Oxygen’s responsive tabs work when O2 is loaded inside Microthemer.
I hope that helps. Please let me know if you notice any other issues.