ya, I have this too.. for some reason they implemented this feature with 1.113, but I hate it.
you're weapon goes transparent (opaque) so you can see thru it halfway into swing, happens to
me on 2h axe & others.. really annoying. I wish there were a way to turn this off, half the fun is
seeing your weapon cleave into the enemy, not vanishing into an opaque seethru weapon before
letting you see impact. BOOOOh!

I hope they fix this soon, as well as the slave trader whom they
made now give you absolutely no money anymore for anyone. He buys all your prisoners for free.
great business for him, very bad business for you.
I love the game, just hate these bugs (features) such as the disappearing weapon & slave trader ripping you off.