Nether Fortresses Not Loading Properly in 1.16

While using a copy of my world and exploring 1.16 update I came across multiple nether fortress' that havent loaded in properly perhaps due to the new biomes found close by. Sometimes it is only a partial fortress like 1 tower and blaze spawner othertimes it is still a small secrion of a fortress that is still missing sections like shown in the pictue.