Ediff highlighting remains after session

[mrs4zft]

Hi,
I have an enoying issue with ediff and while I am aware that it is likely not directly related to spacemacs I hope that you can help me anyhow.

When I start an ediff session from an open buffer with magit-ediff-compare then the difference higlighting remains after quitting (pressing q in the session) the ediff session in the buffer, i.e., all hunks that differ from the file to which I compared have a light gray background. The only solution I have for this now is either quitting emacs or killing the buffer.

Let me give an exhaustive step by step description of the workflow to ensure that the problem doesn't sit in front of the screen (currently I am working on a python project with lsp and pyright):

1. Open a file from a project in a buffer
2. Invoke ediff session with M-x magit-ediff-compare
3. Enter the name of the branch I would like to diff with
4. Select the file from the other branch
5. Cycle through the hunks with j and k
6. Copying those hunks I need from the other branch by pressing a
7. Writing the changes to the file on the working branch by pressing wb
8. Quitting the session with q
9. Confirm the quit with y
10. Ediff will bring me back to the previous windows set up but the highlights remain in the buffer.

I could live with invoking a command that clears the highlighting even if I would need to invoke it manually (likely that it could be added to a hook, anyhow).

Thanks!
Markus