Why is nbstripout not always working with SourceTree?

[ilehmann]

I use nbstripout to suppress the outputs and metadata of my Jupyter notebooks when committing.

If there are lots of plots in a notebook, it is detected as binary file from SourceTree and I cannot see the changes I made. Via the command line, I can see all changes I made. If I now clear the output in the notebook manually, I can see the changes also in SourceTree.

A detailed description of the problem can be found in the GitHub of nbstripout:

https://github.com/kynan/nbstripout/issues/147 

Now the question is why SourceTree detects Jupyter notebooks with a big amount of plots as binary files, and if there is a chance that this problem will be fixed in the future. Of if there is a solution to configure SourceTree so that it does not detect .ipynb files as binary files? Thanks for helping.