The fix for [JDK-8233678](https://bugs.openjdk.org/browse/JDK-8233678) added a step to the NSApplication initialization to deactivate and then reactivate the application. We trigger the deactivation the first time applicationDidBecomeActive is called. We then trigger the reactivation the when applicationDidResignActive is called after that. The initialization logic in MacApplication spins up a nested event loop that waits for the reactivation (a second call to applicationDidBecomeActive).
Something in macOS 14 has changed that prevents the initial call to applicationDidBecomeActive from being done until the application has finished launching (notifyDidFinishLaunching). So the activation of the NSApplication is waiting for the launching to be finished, but the nested event loop we spin up is blocking the completion of launching until we get the activation. This is a classic deadlock. The good news, though, is the deactivation / reactivation of the application no longer seems to be needed on macOS 14. The menus work fine without that fix. The proposed solution is to check the version of macOS and only enable the deactivation / reactivation logic on systems prior to macOS 14. This will have the additional benefit of avoiding the brief flash when the app is first launched (see [JDK-8257835](https://bugs.openjdk.org/browse/JDK-8257835)). This is a Draft PR with a few debugging statements. Once I get some feedback that it works for more than just me, I'll remove the debugging statements and then make it "rfr". ------------- Commit messages: - Remove debug prints - Cleanup method name and flag for better clarity - 8315657: Application window not activated in macOS 14 Sonoma Changes: https://git.openjdk.org/jfx/pull/1247/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1247&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8315657 Stats: 21 lines in 2 files changed: 9 ins; 0 del; 12 mod Patch: https://git.openjdk.org/jfx/pull/1247.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/1247/head:pull/1247 PR: https://git.openjdk.org/jfx/pull/1247
