For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle.com. Technical questions should be asked in the appropriate category. Thank you!
BUG FIXES AVAILABLE.
Version 17.2 is here. The connection dropped message issue should be fixed along with a few other pesky bugs.
This is basically a maintenance release for 4.2, however there are a few new features. I talk about them here
http://www.thatjeffsmith.com/archive/2017/07/sql-developer-v17-2-is-now-available/