Please review this PR which suggests to skip updateIconImages() for not yet visible windows. The displayChanged notification can be sent to a window that is in the process of initiailization and calling updateIconImages() may lead to the deadlock.
Testing: the deadlock no longer happens with this patch. The reg test for JDK-8276849 works (window icon is updated after changing DPI settings). ------------- Commit messages: - skip updateIconImages for invisible windows Changes: https://git.openjdk.org/jdk/pull/13263/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13263&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8305352 Stats: 3 lines in 1 file changed: 2 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/13263.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/13263/head:pull/13263 PR: https://git.openjdk.org/jdk/pull/13263
