It looks like you have made a change in Oxygen Author 13.2: It is now enforcing the rule that XPaths in the conref attribute use the topic ID. For example:
This follows the DITA specification. However, previously Oxygen Author supported using just the element ID. For example:
In 13.2, the results seem fine in the WebHelp output using the latter (element ID only) format, but in Oxygen Author, Author view, the conref's are broken.conref="topic.xml#elementid"
Is there any way to turn this checking off in Oxygen Author? Maybe with a configuration setting?