The new version introduced a bug in the import of table valued functions.
I defined a TvF in the SSDL:
I imported it into the CSDL with the 'Create Method' function in the designer which resulted into:
This worked fine in the last version and still works now. But if I now reopen the model.edml, the designer for whatever reason tries to add the 'IsComposable="true"' attribute a second time, which results into:
And also an error of the custom tool: "Custom tool error: 'IsComposable' is a duplicate attribute name. Line 351, position 183."