using another value for 'where' parameter does not work.
First where parameter must be 'title', not 'titles':
>>> import pwb, pywikibot as py
>>> s = py.Site()
>>> gen = s.search('Tabellenletztem', where='title')
WARNING: search: namespaces cannot be empty; using [0].
>>> x = [i for i in gen]
WARNING: API error gsrunknown_gsrwhat: Unrecognized value for parameter 'gsrwhat': titles
Traceback (most recent call last):
File "<pyshell#29>", line 1, in <module>
x = [i for i in gen]
File "pywikibot\data\api.py", line 2727, in __iter__
self.data = self.request.submit()
File "pywikibot\data\api.py", line 2179, in submit
raise APIError(**result['error'])
APIError: gsrunknown_gsrwhat: Unrecognized value for parameter 'gsrwhat': titles [help:See https://de.wikipedia.org/w/api.php for API usage](see also line 4428, in site.search)
Then 'title' is deprecated:
...
>>> x = [i for i in gen]
WARNING: API error gsrsearch-title-disabled: title search is disabled
Traceback (most recent call last):
File "<pyshell#34>", line 1, in <module>
x = [i for i in gen]
File "pywikibot\data\api.py", line 2727, in __iter__
self.data = self.request.submit()
File "pywikibot\data\api.py", line 2179, in submit
raise APIError(**result['error'])
APIError: gsrsearch-title-disabled: title search is disabled [help:See https://de.wikipedia.org/w/api.php for API usage]At least site.seach is a breaking change versus compat release which uses a ListGenerator ans returns search properties like snippets.