dovecot - Mar 2017 - Search problems after activating fts/solr

Hi,

after activating fts/solr, we can see a changed behavior of standard  
(not fulltext) searches. For example, when searching the 'From' field  
for something at example.com, before activating solr it was ok to start  
search for word 'some' and the result was correct and complete (all  
messages from that user was found). After activating fts/solr,  
searches like this are returning none or only part of messages - i  
need to search for 'something' to get correct and complete result. Any  
hints?

azur