Rows are uneven sized in Notifications list (sysevent_email_action)
This issue can be caused if the 'Message' field is present on the list view for sysevent_email_action table. If this field is present on the list view, the rows can looks as shown in the screenshot below:
For all the records that have the 'Message' field filled in, the rows are regular sized but for records where this field is empty, the row size becomes larger as can be seen in the screenshot above.
The simplest way to resolve the issue would be to personalize the list or configure the list layout for the 'Notifications' table and remove the 'Message' field from the list view. Once removed the list layout looks like in the screenshot below: