Bleaching is bad yes.
sorry to say but it is when it loses
all its colour and is basically not
healthy.
If you also feel its tenticles and
they are not sticky this is another
sign that your anemone is extremely
unhealthy.
mine is currently bleached, but i have
improoved my lighting and its diet so
this will help it recover and you could do
these small things so save your anemone.
SORRY