Emacs keeps overwriting files in Haskell mode

I’m using emacs:

GNU Emacs 26.3
Copyright (C) 2019 Free Software Foundation, Inc.
GNU Emacs comes with ABSOLUTELY NO WARRANTY.
You may redistribute copies of GNU Emacs
under the terms of the GNU General Public License.
For more information about these matters, see the file named COPYING.

And I seem to be seeing a particularly strange problem: emacs, in haskell-mode keeps writing to the file repeatedly after each keystroke (also at times after a few keystrokes).
I’ve read online that some of the common tips to debug issues like these, and to identify the culprit mode, one must selectively disable modes one by one and see which one is causing this.

However, I was wondering if there was a better and less ad-hoc way for going about this: setting breakpoints.

I’ve tried to set debug points on save-buffer, write-file, and save-some-buffers, but this file-write operation doesn’t seem to hit those breakpoints.

Are there more functions in elisp that deal with writing to files? If so, which ones?
And is my technique in trying to identify the culprit sound? Or is setting breakpoints not the ideal way of going about this?

Thanks.

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Edit: similar issue.