Under Accounts Payable, when creating an intercompany vendor invoice, the user can select another legal entity's project to associate with the invoice under the Project tab of the invoice line details. Under certain circumstances, the user might see an error message after selecting a project: "Object reference not set to an instance of an object."

Specifically, hovering over the Project Id in the Project lookup before selecting a project causes an enhanced preview to appear. The preview's cross-company logic incorrectly switches the user's company to the other legal entity, which causes this error.