The "opposite frame" is active,but the button has no focus

Testsuite name: Regression manual
Test name(s):closed/java/awt/Focus/RequestInInactiveFrame/RequestInInactiveFrame.html
Product(s) tested: JDK 7u231b05(64bit)
OS/architecture: mac10.13-x64/Jtreg4.2 b14

Actual behavior:
1)Activate "test frame" by click on its title, press on "press me" button and activate "opposite frame", wait for several seconds.
the resutls: The "opposite frame" is active,but the button has no focus. refer to RequestInInactiveFrame.png.
2)When we move focus to native windows and back,the button gains focus.
The expect results refer to correct-RequestInInactiveFrame.png