Creating a calculation group in Tabular Editor disables the format dropdown in Measure Tools

Hi v-alq-msft ,

Thanks for your reply, this actually affects all measures in my models. After creating a calculation group of any type, even with just a single basic SUM measure as a calculation item, the format option becomes disabled for all measures in the model. I have the measures in a measured table, I'm wondering if that has anything to do with it. In any case, I don't think any of the measures in the models use the DAX FORMAT function. 
Cheers