Description of Bug Experienced:
True Seeing (Ultravision + See invisibility effect 1 turn/level duration) overwrites Ultravision (Ultravision effect 1 hour/level duration). Once True Seeing expires Ultravision's gone too.
Steps to reproduce the Bug:
Cast Ultravision (self)
Cast True Seeing (self)
Wait for True Seeing to expire.
Expected Result:
Ultravision remains.
Actual Result:
Ultravision gone.