The Attribute pane in ArcGIS Pro freezes when edits are made on related data consisting of domains and two layers referencing the same data source. This behavior is inconsistent.
Issues could not be reproduced in Pro 2.0. Significant changes were made to prevent application locking with this release. Upgrades are available online. At this time, there is no plan to produce a service pack for Pro 1.3 or 1.4.