Covered by Behat.
Check that the following templates render with the sample data in site admin > development > Template library
search forums
blocks/search_forums/templates/search_form.mustache
Administration
blocks/settings/templates/search_form.mustache
Subsystem (core_course)
course/templates/course_search_form.mustache
Grade history
grade/report/history/templates/user_button.mustache
Single view
grade/report/singleview/templates/bulk_insert.mustache
grade/report/singleview/templates/button.mustache
grade/report/singleview/templates/dropdown_attribute.mustache
grade/report/singleview/templates/text_attribute.mustache
Subsystem (core_grades)
grade/templates/edit_tree.mustache
grade/templates/weight_field.mustache
grade/templates/weight_override_field.mustache
Subsystem (core)
lib/templates/custom_menu_item.mustache
lib/templates/filemanager_confirmdialog.mustache
lib/templates/filemanager_default_searchform.mustache
lib/templates/filemanager_fileselect.mustache
lib/templates/filemanager_modal_generallayout.mustache
lib/templates/filemanager_page_generallayout.mustache
lib/templates/filemanager_processexistingfile.mustache
lib/templates/filemanager_processexistingfilemultiple.mustache
lib/templates/filemanager_selectlayout.mustache
lib/templates/filemanager_uploadform.mustache
lib/templates/full_header.mustache
lib/templates/preferences_groups.mustache
Forum
mod/forum/templates/quick_search_form.mustache
This is an issue to follow up on the cibot warnings flagged in MDL-58428.
We have done this so the original issue can land and prevent blocking, alot of the warnings are related to Bootstrapbase which will be removed in MDL-64506.