Anaconda lists some environments twice

(base) PS C:\Users\<username>\Desktop> conda info --envs
# conda environments:
#
base                  *  C:\Users\<username>\Anaconda3
proj_1                   C:\Users\<username>\Anaconda3\envs\proj_1
proj_2                   C:\Users\<username>\Anaconda3\envs\proj_2
                         C:\Users\<username>\anaconda3
proj_2                   C:\Users\<username>\anaconda3\envs\proj_2

This is on Windows 10. There's also an old environment present in the C:\Users\<username>\anaconda3\envs directory that I deleted using conda remove -n proj_0 --all in the past. C:\Users\<username>\.conda\environments.txt file contents:

C:\Users\<username>\anaconda3
C:\Users\<username>\anaconda3\envs\proj_1
C:\Users\<username>\Anaconda3
C:\Users\<username>\Anaconda3\envs\proj_2

What's up with all the casing and repeat environments? I don't remember changing anything manually. I've just tried removing the old environment dir (proj_0) manually, but got an error saying the folder is open in another program (I'm guessing conda).

Edit: conda config --show envs_dirs output:

envs_dirs:
  - C:\Users\<username>\Anaconda3\envs
  - C:\Users\<username>\.conda\envs
  - C:\Users\<username>\AppData\Local\conda\conda\envs