FULL PRODUCT VERSION :
openjdk version "11.0.4" 2019-07-16
OpenJDK Runtime Environment AdoptOpenJDK (build 11.0.4+11)
Eclipse OpenJ9 VM AdoptOpenJDK (build openj9-0.15.1, JRE 11 AIX ppc64-64-Bit Compressed References 20190717_292 (JIT enabled, AOT enabled)
OpenJ9 - 0f66c64
OMR - ec782f2
JCL - fa49279 based on jdk-11.0.4+11)

ADDITIONAL OS VERSION INFORMATION :
AIX 7.1 and 7.2

A DESCRIPTION OF THE PROBLEM :
With AIX and Motif Look and Feel, InternalFrame Title bar doesn't fit Japanese/Korean characters.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Launch SwingSet2 demo on AIX
2. Open Internal Frame demo
3. Switch Motif Look and Feel

EXPECTED VERSUS ACTUAL BEHAVIOR :
Expected:
Japanese/Korean title is in title bar.
Actual:
Japanese/Korean title is too high than title bar.
It overflowed the title area.

REPRODUCIBILITY :
This bug can be reproduced always.

ADDITIONAL INFORMATION:
Motif L&F Internal Frame Title bar (MotifInternalFrameTitlePane) seems to use a constant value for height. It's 19 dot (BUTTON_SIZE).
However, the fonts in Japanese or Korean are 24 dot height.