[jdk13u-dev] RFR: 8255880: UI of Swing components is not redrawn after their internal state changed

[Yuri Nesterenko]

The patch applies without modifications, the relevant tests do pass.

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Commit messages:
 - Backport e8c40bafa51ed73247d2a03a8411cbcb0cdf4efa

Changes: https://git.openjdk.java.net/jdk13u-dev/pull/205/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk13u-dev&pr=205&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/jdk13u-dev/pull/205.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk13u-dev pull/205/head:pull/205

PR: https://git.openjdk.java.net/jdk13u-dev/pull/205