Server searches not working for 1 user only

[Ignacio García]

Hi there


I'm using dovecot version 2.3.4.1 precompiled in Debian 
stretch-backports (with Maildir, and Lucene FTS). Everything seems to be 
running fine but server searches by one user (precisely me) using 
roundcube 1.4.8. For all other checked users server searches work fine. 
My account is not particularly differnt from others, aprox same amount 
of mail. The only difference with others is that I use/check my mail 
constantly and from different devices at the same time (roundcube, a 
couple of instances of Thunderbird and Aquamail for Android always 
open). I only use IMAP. Googling around I read about deleting 
cache/index files with Dovecot recreating them automagically, but since 
I haven't found anything official on the Wiki, before I do something 
potentially stupid I wanted to confirm with you all for guidance on this


Thanks so much in advance


Ignacio