# Geometrically-localized mouse event drops in AU plugins on macOS Tahoe 26.4 Logic / GarageBand only, REAPER fine

**URL:** <https://forum.juce.com/t/geometrically-localized-mouse-event-drops-in-au-plugins-on-macos-tahoe-26-4-logic-garageband-only-reaper-fine/68658>\
**Category:** MacOSX and iOS\
**Created:** [April 16, 2026, 8:26pm UTC](https://forum.juce.com/t/geometrically-localized-mouse-event-drops-in-au-plugins-on-macos-tahoe-26-4-logic-garageband-only-reaper-fine/68658 "2026-04-16T20:26:59Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![kayrock](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/kayrock/32/22099_2.png) [@kayrock](https://forum.juce.com/u/kayrock)\
**Post date:** [April 16, 2026, 8:26pm UTC](https://forum.juce.com/t/geometrically-localized-mouse-event-drops-in-au-plugins-on-macos-tahoe-26-4-logic-garageband-only-reaper-fine/68658/1 "2026-04-16T20:26:59Z")

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**Isolation:**

- Logic / GarageBand AU: dead cells reproduce.

- REAPER (its own AU host), standalone, VST3/CLAP/LV2 in other hosts: all cells work. Same plugin binary, same machine, same OS.

**Instrumentation:** I added a `MouseListener` on the editor (with `wantsEventsForAllNestedChildComponents=true`) plus a direct `mouseDown` log inside the affected child. The user clicked extensively across the dead zone and a working cell adjacent to it. The working cell produces both log entries. Every click in the dead cells produces **no log entry of any kind** — events never reach JUCE.

What’s different from the existing reports ([viennal](https://forum.juce.com/t/component-scaling-issue-on-the-macos-tahoe-for-logic/66690), [moving-window](https://forum.juce.com/t/macos-tahoe-logic-x-mouse-not-respond-after-moving-window/67639), [glitchy-resize](https://forum.juce.com/t/glitchy-resizing-in-logic-pro-on-macos-tahoe/67529), [iPlug2](https://iplug2.discourse.group/t/os-tahoe-brings-new-problems-in-logic-pro/1021)): those describe contiguous regions that scale with UI scale. This is a small fixed region at a specific position. Suggests `AUHostingService` may have a clipping rect or hit-test region with wrong geometry, in addition to (or instead of) the coordinate-transform issue others have hit.

**Filed with Apple:** FB22477732. If you’ve filed Feedback Assistant reports on related Tahoe AU mouse issues, please reference this FB and reply with yours so we can cross-link.

**Questions:**

1. Anyone else seeing geometrically-localized drops at specific positions, rather than scaled bands?

2. Any known JUCE-side workaround?

Plugin: KR-106 (JUCE-based, AU/AUv3/VST3/CLAP/LV2/Standalone). OS: macOS 26.4 / 26.4.1.

@reuk — flagging in case the specific-cell pattern is useful additional signal.

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**Author:** ![mike-e](https://avatars.discourse-cdn.com/v4/letter/m/bb73d2/32.png) [@mike-e](https://forum.juce.com/u/mike-e)\
**Post date:** [June 22, 2026, 9:22am UTC](https://forum.juce.com/t/geometrically-localized-mouse-event-drops-in-au-plugins-on-macos-tahoe-26-4-logic-garageband-only-reaper-fine/68658/2 "2026-06-22T09:22:13Z")

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I have reported this issue again under FB23318421

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**Author:** ![stefhen](https://avatars.discourse-cdn.com/v4/letter/s/7ab992/32.png) [@stefhen](https://forum.juce.com/u/stefhen)\
**Post date:** [September 7, 2026, 1:06pm UTC](https://forum.juce.com/t/geometrically-localized-mouse-event-drops-in-au-plugins-on-macos-tahoe-26-4-logic-garageband-only-reaper-fine/68658/3 "2026-09-07T13:06:42Z")

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Also seeing this problem in multiple plugins. It manifests as a roughly 250 by 20px strip at the bottom of the plugin window (horizontally centred) where mouse events are essentially ignored.

I’m building with JUCE 8.0.12. I did try JUCE 9 but had the same problem.

Does anyone know if there has been any attempt to fix this or any more information released about the problem?