Проблему решил добавлением в mdl_capabilities недостающих параметров
"quizaccess/seb:manage_seb_enableaudiocontrol" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_muteonstartup" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_allowspellchecking" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_activateurlfiltering" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_filterembeddedcontent" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_expressionsallowed" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_regexallowed" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_expressionsblocked" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_regexblocked" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_enableaudiocontrol" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_muteonstartup" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_allowspellchecking" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_activateurlfiltering" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_filterembeddedcontent" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_expressionsallowed" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_regexallowed" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_expressionsblocked" "write" 70 "quizaccess_seb" 0
"quizaccess/seb:manage_seb_regexblocked" "write" 70 "quizaccess_seb" 0