Swing application UI freezes at sun.lwawt.macosx.CAccessibility.getChildrenAndRoles

[privetyaolega]

In my Swing application, I utilize a JTree component with approximately 120 TreeNodes. Each node has around 100-120 child nodes, spanning up to three hierarchical steps. The issue arises when I expand a TreeNode with a large number of children (more than 50), causing my application to become unresponsive for several minutes.

Upon investigation, I discovered that the code responsible for the slowdown is the calculation in sun.lwawt.macosx.CAccessibility.getChildrenAndRolesRecursive. After a duration of 2-3 minutes, the application becomes responsive again.

I found a similar bug with the same problem in a JetBrainsRuntime project, which was resolved in this commit. As a result, I was able to resolve my issue by using the JDK jbr_jcef-17.0.7-osx-aarch64-b966.2 from JetBrains.

My request is whether Corretto 17 could implement a similar fix as the one implemented in the JetBrains project. I greatly appreciate any assistance provided.

Platform information

MacBook Pro M1, 2020
OS: macOS Monterey Version 12.5
Version Amazon Correto 17.0.5

[earthling-amzn]

Thank you for bringing this to our attention. That's some good sleuthing work to find a fix for your issue. We'll review the patch and keep this ticket updated. It looks like it may be related to: https://bugs.openjdk.org/browse/JDK-8068222 - do you have any voice overs or other accessibility options enabled?

[earthling-amzn]

I've contacted the patch author about upstreaming.

[privetyaolega]

Thank you for the prompt assistance.
I have disabled voice overs and other accessibility options.