Fire Burst and Blaze will replace glass panes with fire blocks. And the glass panes don't come back.
Fire using these moves also replaces/removes torches, tall grass and flowers. It will even put fire in places it would not normally be from the move when replacing a torch. So if you had a torch on/beside a roof or wall but not on the ground, fire will replace the torch leaving a fireblock on the wall/roof where it wouldn't normally be (the move normally would only place fire on the ground, not walls of doors).