Whenever I, and my away team beam-out or in, the texture for my character's hair becomes void and black, and I lose some of the transporter particles to the same bug. This has occured since the Season One patch went live.
Not a major issue, but it looks awful, I'll snap a screenshot next time I beam and update with it.
I'll be honest, I think this may be a warning sign, I don't want to be a scare-monger, but check your GPU temp, I had a GFX card error after the Sunday patch, and my card is now shot - to reiterate, I am not stating I believe STO is responsible, but it would be best to check your card temp as has been stated by support it is a high-end game, and does push the envelope somewhat.
While we're talking transporters, I'd also add that the combadge emote happens simultaneously to the transporter effect, which makes no sense. The transporter effect should not occur until the combadge emote is complete.