When it comes to the Act 3 romance scene with Karlach and what happens after she picks you up, body type does not matter and I had this reported directly to Larian by ticket like so long time ago, this was like 3 weeks after the game got officially released on steam, don't know if this feedback report was taken to heart but once it came to my ears of the unfortunate event for our lead cinematic animator Jim Southwood, now I can understand why some animation were left as they are..
The only lovescene that bothers me out of all of these is the Act 3 dating with Karlach, like it doesn't need any changes whatsoever, just additions for the game to check for gender type and switch to using a more proper animation reflecting for male types like maybe that was intended but never came to happen due to unforeseen consequences, who knows?
Really wish Jim Southwood would still be among us, that took me completely by surprise and I feel very sorry to have heard of this, my condolences to those affected by it.