sometimes you can meet this bug
i think its when you launch the game
and at the character selection screen you realized your AddOns фтв SavedVariables folder is empty and you copying them from backup
and then you press Play
and if you loggin in on the hero different textures from different addons will be missed
like on the screenshots:
pChat
YssEquipment indicator
Lui extended
the ONLY way to fix this - completely RE-LAUNCH the game