[Object Object] : how to fix this problem ?

This is a screenshot which shows what I can see when I try to translate an unstranslated message, the message is the same on everypage, and it appears only when the page has not been created yet in malagasy and in other languages (there is the same problem when I try to translate in esperanto), I don't know if other translators have the same problem when they try to create a message page.

This problem does not stop me to translate messages, but as it appears on every page, my browser is lagging (or in the worst cases, bugging) when I open multiple tabs.

For information, on internet explorer on in mozilla firefox, the same message appears when I try to translate an untranslated text.