Feelings are not always caused by ignorance because the Pali suttas state arahants & Buddhas experience feelings:
Here a bhikkhu is an arahant, one whose taints are destroyed, the holy life fulfilled, who has done what had to be done, laid down the
burden, attained the goal, destroyed the fetters of being, completely
released through final knowledge. However, his five sense faculties
remain unimpaired, by which he still experiences what is agreeable and
disagreeable and feels pleasure and pain. It is the extinction of
attachment, hate and delusion in him that is called the
Nibbāna-element... Iti 44
Here, ruler of gods, a bhikkhu has heard that nothing is worth adhering to. When a bhikkhu has heard that nothing is worth adhering
to, he directly knows everything; having directly known everything, he
fully understands everything; having directly known everything, he
fully understood everything, whatever feeling he feels, whether
pleasant or painful or neither pleasant or painful, he abides
contemplating (observing) impermanence in those feelings,
contemplating (observing) fading away, contemplating (observing)
cessation, contemplating (observing) relinquishment (letting go).
Contemplating (observing) thus, he does not cling (think about) to
anything in the world. When he does not cling (think about), he is not
agitated, he personally attains Nibbana. He understands: ‘Birth is
destroyed, the holy life has been lived, there is no more coming to
any state of being.’ Briefly, it is in this way, ruler of gods, that a
bhikkhu is liberated in the destruction of craving, one who has
reached the ultimate end, the ultimate security from bondage, the
ultimate holy life, the ultimate goal, one who is foremost among gods
and humans. MN 37
On seeing a form with the eye, he does not lust after it if it is pleasing; he does not dislike it if it is unpleasing. He abides with
mindfulness of the body established, with an immeasurable mind and he
understands as it actually is the deliverance of mind and deliverance
by wisdom wherein those evil unwholesome states cease without
remainder. Having thus abandoned favouring and opposing, whatever
feeling he feels, whether pleasant or painful or
neither-painful-nor-pleasant, he does not delight in that feeling,
welcome it, or remain holding to it. As he does not do so, delight in
feelings ceases in him. With the cessation of his delight comes
cessation of clinging; with the cessation of clinging, cessation of
being; with the cessation of being, cessation of birth; with the
cessation of birth, ageing and death, sorrow, lamentation, pain,
grief and despair cease. Such is the cessation of this whole mass of
suffering. MN 38
28. But when the Blessed One had entered upon the rainy season, there arose in him a severe illness, and sharp and deadly pains came upon
him. And the Blessed One endured them mindfully, clearly comprehending
and unperturbed. DN 16