Issue is BasicScrollBarUI.ArrowButtonListener starts a timer in mousePressed(), and stops it in mouseReleased(). If the frame containing the scrollbar is disabled between the MOUSE_PRESSED and the MOUSE_RELEASED events, the mouseReleased() method is never called. If the frame is then re-enabled, the still-running timer causes it to scroll all the way to the end. Fix is to check if [ArrowButtonListener.handledEvent](https://github.com/openjdk/jdk/blame/ee839b7f0ebe471d3877cddd2c87019ccb8ee5ae/src/java.desktop/share/classes/javax/swing/plaf/basic/BasicScrollBarUI.java#L1567) is still set when ActionEvent is processed then stop the timer and reset this variable.
CI testing is green and also SwingSet2 JScrollPane scrolling with this modification.. ------------- Commit messages: - Test format - Test format - Test format - 6318027: BasicScrollBarUI does not disable timer when enclosing frame is disabled. Changes: https://git.openjdk.org/jdk/pull/20346/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20346&range=00 Issue: https://bugs.openjdk.org/browse/JDK-6318027 Stats: 192 lines in 2 files changed: 192 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/20346.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/20346/head:pull/20346 PR: https://git.openjdk.org/jdk/pull/20346
