Contacts are being treated as updated and written to database, but their content did not change

Submitted by Mateusz Polrola

Assigned to Patrick Ohly @pohly

Link to original bug (#87144)

Description

When using version 1.3.99.5, contacts that does not have any given or family name assigned but contains only email address are being updated with each synchronization, but their content did not change since last synchronization.

This may be similar to bug 84710, but cause of that one was introduced already to 1.4.99.4 version.

Version: 1.3.99.3