IBM hat einige Hotfixes für Sametime veröffentlicht:
Sametime 9.0.1 Cumulative Hotfix for Meeting Server and Proxy Server - Sametime WebPlayer support for Firefox 52 and above.
http://www-01.ibm.com/support/docview.wss?rs=899&uid=swg21999872
Sametime 9.0.1 HF - Rich Client Hotfix Release - March 2017
http://www-01.ibm.com/support/docview.wss?rs=899&uid=swg22000363