The bug fixes and known issues for PowerBuilder 2017 R3 are listed in the Release Bulletin for PowerBuilder at the following links:
Bug Fixes for PowerBuilder: https://www.appeon.com/support/documents/appeon_online_help/pb2017r3/release_bulletin_for_pb/bug_fixes.html
Known Issues for PowerBuilder: https://www.appeon.com/support/documents/appeon_online_help/pb2017r3/release_bulletin_for_pb/known_issues.html