Paintings Constantly Falling Off Walls

My base is having issues with large paintings. Every single time I reload the chunk, specific paintings are falling off the walls. Traveling too far away in the overworld causes them to fall as does going in the nether portal and coming back. It is also happening in my nether base to one specific painting as well. I have had these paintings in my base for several years now, and only in the last couple months has this started happening. From what I can tell, it is happening to any painting that is a 3x3 or larger (including the 2x4 variants), and for the paintings attached, it is happening quite literally every single time I reload the chunk. I have smaller paintings around the base and it’s not happening to them, at least not yet. It’s disappointing because I would like to use the newly added paintings but there is no point if I am constantly having to place them back on the wall.