The older activity formatter does not show sys_email entries correctly when sending or receiving.
Steps to Reproduce
Log in to an instance with email provisioned and UI16 enabled.
Go to sc_req_item_li.do and create two new email notifications on sc_req_item: one with a condition where "Work Notes" changes and one with condition where "Additional comments" changes.
Go to sys_properties_list.do and set the glide.ui16.live_forms.enabled system property to false, or switch to UI15.
Create a new sc_req_item, change the state to "Work in progress" and put in an additional comment. Click Save.
Wait for emails to be sent.
Once the emails have been sent, reload the sc_req_item form.
Note that instead of the activity formatting showing two emails sent at the same time, only one of the emails is shown.
Use UI16 or set the glide.ui16.live_forms.enabled system property to true.
Related Problem: PRB732511