No emacs source files in Debian testing?

[Haines Brown <haines@histomat.net>]

With an upgrade to testing, I get this warning when I load emacs:

  Warning (comp): Cannot look-up eln file as no source file was found
  for /home/haines/.emacs.d/elisp/ibus.elc

I gather that with emacs version 28 the ibus.el source file is no 
longer installed, although it must found if the compiled ibus.enc file 
is to load.

I tried to find a testing version of ibus.el but did not succeed. I
tied to use an old ibus.el file from Jul 2020, but it had obsolete
functions and so was not usable.

Can I just ignore the warning? If I do does it leave ibus
non-functional? Should I file a bug report?

-- 

     Haines Brown 
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