Not that I make a lot of bone broth, but--did you let the broth cool before freezing it? It sounds like a hot jar went into a cold fridge?
Nope, let it cool in fridge first.
Don’t fill the broth all the way to the top. Liquid expands as it crystallizes so it needs room on the top for expansion or your jar will break.
Yup, did that too. I have Kitchen issues.
So, with all this support, how could I not try making my own broth. I bought a family pack of 12 chicken legs, threw them in a pot, good splash apple cider vinegar and simmered for 4 hours. Geez, I am exhausted. I easily separated the meat from the bones and threw the bones and skin back in the water to simmer. I plan on putting the broth with bones in the crock pot overnight to continue cooking. I am afraid to leave the stove on over night.
I have never used a pressure cooker or instant pot as they slightly terrify me.

I do like the crock pot; fill it in the morning and ready for dinner.
Full disclosure: Harley, my little love bug, drives me nuts. Every now and then, a few times a week, he decides that I am trying to poison him and WILL NOT EAT THE FRISKIES PATE. He howls and sticks his face in my food, RUNS in the kitchen when the fridge opens, and otherwise acts like I am starving him to death. I finally gave in and allow him to eat the kibble; he picks at it and does not eat much. His blood sugars are still not quite right because of his "she is poisoning me today vs. it is safe to eat today" issues.
So after stage 1 of my bone broth adventure, I gave Harley some chicken. The little turd, um love bug, Devoured it then lapped up a bit of cooled broth. He ate a good 1/2 cup chicken. He is now passed out in splendid bliss on the couch.
I do hope the bone broth works for others who are struggling with eating issues.