Since upgraded to 2.15 we have noticed several accounts have been duplicated thus when they log in they see no reviews.
For example kaldari account has been duplicated and jbranaa.
Possibly-Related upstream tasks:
* [[ https://bugs.chromium.org/p/gerrit/issues/detail?id=7723 | User first login get two records created in accounts table ]]
** This is the same symptom, maybe not the same cause.