The Version table provides details related to the release that this issue/RFE will be addressed.
Unresolved : Release in which this issue/RFE will be addressed. Resolved: Release in which this issue/RFE has been resolved. Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
Yes, it's a regression of 7177040. The reason is that isFlushingPendingEvents in SunToolkit.flushPendingEvents() is reset after the first recursive call of flushPendingEvents(). Thus, if there are several pending events in PostEventQueue, recursion would be rejected only for the first event, allowing nested call of PostEventQueue.flush().