Happening to me on PS4, 1.21.100, app version 3.18. The breaking paintings seem to be a completely random selection; sometimes it's paintings placed on trapdoors, sometimes it's paintings in spaces with other objects inhabiting the same block space (a painting on a wall with a chain dangling in front, or a “computer” made with a painting and an iron pressure plate, for example), sometimes it's paintings simply near trapdoors. Sometimes it'll be paintings in a rectangle of chunk space, or only one or two individual paintings. But it's never the same group of paintings twice.
Happening to me on PS4, 1.21.100, app version 3.18. The breaking paintings seem to be a completely random selection; sometimes it's paintings placed on trapdoors, sometimes it's paintings in spaces with other objects inhabiting the same block space (a painting on a wall with a chain dangling in front, or a “computer” made with a painting and an iron pressure plate, for example), sometimes it's paintings simply near trapdoors. Sometimes it'll be paintings in a rectangle of chunk space, or only one or two individual paintings. But it's never the same group of paintings twice.