bug#37496: 27.0.50; C-s failing to search

[Jean Louis]

* Eli Zaretskii <eliz@gnu.org> [2019-09-26 10:07]:
> You could edebug-defun in wdired-isearch-filter-read-only, and see if
> it gets invoked when you type C-s, and if so, whether it somehow
> thinks every search hit is to be skipped.  Can you do that?

When it happens, that I just invokie (edebug-defun) in the buffer?

Let me say that search is lost after doing my activities, and I do not
search during editing of Dired buffers, so not that I attempted it
during Wdired. Usually I finish Wdired with C-c C-c and then I move to
some other directory.

I will try to invoke edebug, but how to invoke it exactly?