Return code of Windows patches depend on the specification of patch module provided by Microsoft.
However, Patch Manager assumes some return code as success by DMS script in patch content.
You can see the script on Patch Manager. Navigate [Patch] tab > [Install] menu > Select number under [Steps].
Some patches handle following return code as success. This situation is not only IE11 patch but also most of other patches.
|3010 ||Success - Required Reboot|
|17025 ||Already applied|
|-2145124329 ||Not applicable|
|2359302 ||Already applied|
This behavior is per product design.