In cross-lingual mode, Weina pronounces the monothong /uh/ as in look as the diphthong /uw/.
This frustratingly wrong…
She also pronounces the monothong /ih/ as the diphthong /iy/, although not nearly as strongly, and depending on the register.
Edit: The issue with the /ih/ isn’t nearly as bad as the /uh/, so I struck it out.
These can be somewhat mitigated by replacing them with a neutral phoneme such as /ah/ or /ao/, but it would be nice if Weina were able to say all the correct vowel sounds.