Rollo said:

The platform you play on (e.g. Facebook, VK, Plarium.com) :
Plarium.com

The server where you play (e.g. The Pirate Bay, The Golden Coast, etc.) :
The Pirate Bay, in french

The feature that causes the issue (Unit training, raiding, etc.) :
A Plarium update as it was working 

The exact steps you performed before the bug arose :
Accented letters as e.g. ê à û ï Ê ô ... and various other signs as œ are not displayed in chat and MP's.
These accented letters are important in french.

Any special conditions that caused the bug to appear (active events, applied bonuses, etc.) :
Nothing special, permanent bug

Hello captain! These signs were breaking placeholder fields (lines where you type some text), that's why we had to remove them at all. 

This topic will be closed.

Thank you for your cooperation and happy holidays!