I am seeing a similar problem here as well. I swear this was working on my first branch. Now, the ignore.conf doesn't seem to honor certain paths. If I specify the exact path of each file, it will finally rid the flooded "added" category.
I have not added these files to version control as seen in a few other threads , including this one from 2020:
This leads me to think that there is a bug in the ignore code. I am using the "definitive unity ignore conf" as provided here https://blog.plasticscm.com/2020/01/definitive-ignoreconf-for-unity-projects.html
I'll try updating plastic scm to see if it fixes itself, otherwise I am left to just highlight, right click, and choose "add full path to ignore file" which will remove the flood, but is tedious for the ignore.conf file, making it grow to enormous length.