When SimpleLink and SmartLink are enabled, CustomLinkId is sometimes missing.

If trying to find NavLinkProxy with SimpleLink and SmartLink enabled by searching the path,  sometimes CustomLink is not found (CustomLinkId=0). Since only one NavLinkProxy is located on the level, we expect it to always be found. Depending on where you start your path search, you may be able to find a NavLinkProxy. If CustomLinkId is not found, we can find it by deleting SmartLink.

1. Open the attched project.
2. Play in editor.

Result:

Not find Custom Link and output error log "Not found Custom Link"

Expect:

Find CustomLink and output log "Success"