Dependent picklists do not work correctly when using inline editing on a Visualforce page
|Knowledge Article Number||000175208|
You have a dependent picklist on a Visualforce page that doesn't behave as expected. The following example code illustrates the typical problem:
Inline editing on dependent picklists referenced on the Visualforce page will only work when the picklists are placed in the same <apex:pageBlockSection >. In case you place a dependent picklist in a different <apex:pageBlockSection>, inline editing will not function correctly.