In the Administrator interface (https://<operationsfqdn>/admin/) under the Software Update tab, the Version build number is different than what shows up under System Status under the versions for the nodes.
For example: 8.18.3.24663033 shows in the System Status tab for the nodes while 8.18.3.24663027 shows for the Version of the last software update which was installed under the Software Update tab.
Aria Operations 8.18.x
The build number can vary from the PAK to different components built and packaged in the PAK file.
This is expected behavior.