Problem:
When I open the Advanced Translation Editor, it appears on a black background. If I click on a part of the text to make a modification, it jumps to a white screen with no text at all. For the moment, all I can do is read a text and accept it as-is without making any modifications, and click on Complete translation.
Solution:
This issue was related to the New ATE. Our translator was able to temporarily resolve it by choosing the "Use previous version of ATE".