Why is sorted uniq -c command showing duplicates

I am trying to count how many times I use a certain version of a library on my computer. For some reason, uniq -c is outputing duplicates, despite sorting it, and despite the sort order seeming in order. Any ideas or feedback? Thanks for your time. ### With uniq -c Input:

rg --no-line-number --no-filename -g '*.csproj' "GitVersion.MsBuild" | sed -E '/GitVersion\.MsBuild" Version/!d;s/^\s\+//g;//\1   \2/g' | sort -n | uniq -c

Output:

3 GitVersion.MsBuild      5.10.1
      1 GitVersion.MsBuild      5.10.1
      3 GitVersion.MsBuild      5.10.3
     11 GitVersion.MsBuild      5.11.1
      5 GitVersion.MsBuild      5.11.1
     25 GitVersion.MsBuild      5.12.0
      2 GitVersion.MsBuild      5.12.0
      1 GitVersion.MsBuild      5.6.11
      2 GitVersion.MsBuild      5.7.0
      4 GitVersion.MsBuild      5.8.1

### Without uniq -c Input:

rg --no-line-number --no-filename -g '*.csproj' "GitVersion.MsBuild" | sed -E '/GitVersion\.MsBuild" Version/!d;s/^\s\+//g;//\1   \2/g' | sort -n

Output:

GitVersion.MsBuild      5.10.1
GitVersion.MsBuild      5.10.1
GitVersion.MsBuild      5.10.1
GitVersion.MsBuild      5.10.1
GitVersion.MsBuild      5.10.3
GitVersion.MsBuild      5.10.3
GitVersion.MsBuild      5.10.3
GitVersion.MsBuild      5.11.1
GitVersion.MsBuild      5.11.1
GitVersion.MsBuild      5.11.1
GitVersion.MsBuild      5.11.1
GitVersion.MsBuild      5.11.1
GitVersion.MsBuild      5.11.1
GitVersion.MsBuild      5.11.1
GitVersion.MsBuild      5.11.1
GitVersion.MsBuild      5.11.1
GitVersion.MsBuild      5.11.1
GitVersion.MsBuild      5.11.1
GitVersion.MsBuild      5.11.1
GitVersion.MsBuild      5.11.1
GitVersion.MsBuild      5.11.1
GitVersion.MsBuild      5.11.1
GitVersion.MsBuild      5.11.1
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.12.0
GitVersion.MsBuild      5.6.11
GitVersion.MsBuild      5.7.0
GitVersion.MsBuild      5.7.0
GitVersion.MsBuild      5.8.1
GitVersion.MsBuild      5.8.1
GitVersion.MsBuild      5.8.1
GitVersion.MsBuild      5.8.1

--- I've updated my command to pipe to xxd as per @kos's suggestion. That helped in comparing.

rg --no-line-number --no-filename -g '*.csproj' "GitVersion.MsBuild" | sed -E '/GitVersion\.MsBuild" Version/!d;s/^\s\+//g;//\1     \2/g' | sort -n | uniq -c | xxd

That yielded (sorry for the screenshot, but it helps having the colors). I then revised the regex slightly (sorry all, I didn't take all the suggestions on board, since one tiny tweak made it work, but I do have to say I learnt a lot by this, including using xxd) I simply added .* after the >:

rg --no-line-number --no-filename -g '*.csproj' "GitVersion.MsBuild" | sed -E '/GitVersion\.MsBuild" Version/!d;s/^\s\+//g;/.*$/\1  \2/g' | sort | uniq -c

And it now yields the correct (or satisfactory anyway) output:

4 GitVersion.MsBuild      5.10.1
      3 GitVersion.MsBuild      5.10.3
     16 GitVersion.MsBuild      5.11.1
     27 GitVersion.MsBuild      5.12.0
      1 GitVersion.MsBuild      5.6.11
      2 GitVersion.MsBuild      5.7.0
      4 GitVersion.MsBuild      5.8.1

Thanks team!