https://bugs.winehq.org/show_bug.cgi?id=44997
--- Comment #6 from Joerg Schiermeier mywine@schiermeier-it.de --- (In reply to Joerg Schiermeier from comment #5)
German tax office dropped the complete support for its ElsterFormular. This means: -no download an installation file -no updates of an existing installation -no interface connector for uploading the tax data
This means: there is not really a chance to fix a bug - neither in wine nor in ElsterFormular or elsewhere.
This bug may be set to "ABANDONED / CLOSED".
Sorry: I'm wrong. The tax office still provides downloadable versions of this software here:
https://www.elster.de/eportal/infoseite/download_elsterformular
There are still three versions: -private user -small business -all forms for every kind of business and taxes
The update function still works. Only the interface connector for uploading the tax data may not work, until you want to upload an old tax declaration - but this will need more work and infos.