Developer credits
Git commits in Moodle 3.8.x by Justin Hunt
commit ec92de91877d7b884f1965de638b416ccf6de6c8 Author: Justin Hunt <poodllsupport@gmail.com> Date: Tue, 01 Oct 2019 14:40:04 +0800 Tag: v3.8.5 MDL-66810 mod_lti: Reinstate deprecated default permissions on iframe