<Swing Dev> [jdk16] RFR: 8255880: UI of Swing components is not redrawn after their internal state changed

[Anton Litvinov]

Hello,

This is a review request for straight back port of the fix for the bug JDK-8255880 from JDK 17 to JDK 16, which is currently in RDP 1 phase. The fix was tested and the regression test was executed on MS Windows OS, Linux OS, macOS.

Thank you,
Anton

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Commit messages:
 - Backport e8c40bafa51ed73247d2a03a8411cbcb0cdf4efa

Changes: https://git.openjdk.java.net/jdk16/pull/38/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk16&pr=38&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8255880
  Stats: 199 lines in 2 files changed: 199 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk16/pull/38.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk16 pull/38/head:pull/38

PR: https://git.openjdk.java.net/jdk16/pull/38