Yes, I actually ran into this same issue. I had a very large capital loss carryover, then for 2021 I had a very large capital gain. I almost fell out of my chair when TT calculated my AMT. I was sitting there thinking this has to be wrong. I am only able to take the standard deduction, yet my tax due increased by about $45,000! After hours of trying to figure this out, I also found the article you referenced and then your post. Fortunately I was able to bring up my equivalent forms for 2020 to help verify how it should be. TT seems to just grab a number out of thin air....I have no idea how it came up with that. After more research I found where to fix it. I have been trusting TT for many years but now there are serious questions in my head if TT can be trusted. I consider this a very serious error in their software. Not only did they issue the software with this problem, they also have not yet patched it. This is very irresponsible conduct. If I ever see a problem anywhere near like this again with TT, it will probably be time for me to try someone else's software.
