Dekko crashes while opening an email in SENT folder

Context

Dekko crashes while opening an email in SENT folder containing a text in the body of the email

Expected Behavior

When opening an email in a SENT folder, Dekko shouldn't crash, but open the email

Actual Behavior

Dekko crashes while opening an email in SENT folder containing a text in the body of the email, BUT, doesn't crash while opening an email that doesn't contain any text in the body of the email, just an attachment. It was happening on Alfa, Beta1 and now on Beta2. The previous Dekko2 for 15.04, did not have such a problem. I'm using Yandex mail. This happen on Meizu Pro5, 16.04/stable Uninstalled the Beta1, cleaered the .cache, .config, .local folders before installing the Beta2

application-click-dekko2.dekkan_dekko_0.1.6-beta2.log.2.gz

application-click-dekko2.dekkan_dekko_0.1.6-beta2.log.1.gz

application-click-dekko2.dekkoproject_dekko_0.1.6-beta1.log.1.gz

Steps to Reproduce

as above

Your Environment

Meizu Pro5,Yandex mail provider

• Dekko version used: BETA2
• Desktop environment (e.g Unity7, Unity8, GNOME):Unity8
• Operating System and version:16.04/stable