Recently I've switched to new UI just to test. (I don't like it but that's not the point ;) ).
Noticed two issues:

1. when you already have character in main menu who carries weapon in his/her hands and you enter "Character" section to pick next one. First time this new one will share the same animation with your geared character (carries invisible weapon).
2. Ghillie gun wrap not visible on weapon in hands of character in main menu. {F31543}