As we are not doing any backport other the security fixes I suggest you to always test the last released version (2.7 or 2.8rc) to check if something Is fixed.
You can also debug build TFlite to inspect the break:

  
      

      TensorFlow
  

  
    

Build TensorFlow Lite with CMake 2



  

  
    
    
  

  


https://groups.google.com/a/tensorflow.org/g/tflite/c/c4xNf_TrDrY 3