I set data-m-autoload to false for a section that required custom code. The load handler would not run for this section. It turns out another load handler was matching the section, which ran and did nothing because it was for the wrong page. Example: I have two sections. Their data-m-page attributes are "ActivityList" and "SomethingActivityList." I was trying to load SomethingActivityList, but I found in the Check method in routing.ts that ActivityList was getting matched instead. After changing SomethingActivityList to SomethingActivitiesList, it correctly matched the section I wanted to load.