As Domoticz doesn’t provide a easy way to return to previous versions I’d like to offer some of the older versions from my backup.
Downloads are ‘as is’, I’m in no way responsible for these.
These are copies of a Domoticz installed on Debian, I don’t remember the exact version number, filenames are in YYYYMMDD format of the executable.

Version history:

20171204

20171230

20180122

20180318