Reading IGES from stream seems broken on 7.7.0

Hello,

Reading an IGES from file works as expected:

IGESCAFControl_Reader reader;
reader.ReadFile("some_file.iges");

But is not working when reading from stream (IFSelect_RetFail is returned):

IGESCAFControl_Reader reader;
std::ifstream stream("same_file.iges", std::ifstream::in  | std::ifstream::binary);
reader.ReadStream("", stream);

Please note that that there's no issue with the STEPCAFControl_Reader.