There is a known incompatibility between the TinyMCE editor in Moodle, and LockDown Browser version 2.0.3. This incompatibility is with the version of Chromium Enhanced Framework (CEF) that LockDown Browser 2.0.3 uses.
The symptoms of this problem include hangs/freezes, white screens and sporadic problems when submitting the exam.
The best workaround is to set your default editor to be the ATTO editor.
The symptoms of this problem include hangs/freezes, white screens and sporadic problems when submitting the exam.
The best workaround is to set your default editor to be the ATTO editor.