Screen goes white

In a project where I had successfully transcribed two bits and synced them with Paratext, I go to create a new task, and when I go back after creating the task, the Transcriber screen goes white, and nothing else happens until I close the program. When I restart, the task I created did not get saved.

Retried it several times, keep getting the same result.
Here’s a video:

Trying this task again and today it works fine. The problem apparently went away.