Looks like they are getting run through some bad regex. This affects the designer's ability to reverse engineer from databases with non-English TVF parameter strings.
Comments: Right now this is happening as part of the Designer's validation ("RuntimeMetadataValidator") which for the beta will still be using the legacy .NET runtime. Post-beta, Pawel has a task to remove this dependency and use the EF6 runtime. We can fix this bug in the EF6 runtime (we've isolated the problematic regex), but the designer won't see the fixes until post-beta, so we'll need to do a second round of verification once the designer changes are made.
Comments: Right now this is happening as part of the Designer's validation ("RuntimeMetadataValidator") which for the beta will still be using the legacy .NET runtime. Post-beta, Pawel has a task to remove this dependency and use the EF6 runtime. We can fix this bug in the EF6 runtime (we've isolated the problematic regex), but the designer won't see the fixes until post-beta, so we'll need to do a second round of verification once the designer changes are made.