Plug-in Manager "Add Category (+)" button is unresponsive in Logic Pro 13
I worked through the following with Gemini, so manually fixed it, but just in case anyone else having the issue (or knows something I got wrong!!!)
Hardware: Mac Studio (Apple M1 Max, 32 GB RAM)
macOS Version: macOS 27.2 (26B123)
Product: Logic Pro 13 (Apple Creator Studio & Standalone versions)
Area: Plug-in Manager / UI
Summary:
Clicking the + button next to Category in the Plug-in Manager does not create a new category or display a text input field/dialog. Pressing Return or typing immediately afterward briefly dims/flashes the screen without creating a folder.
Steps to Reproduce:
- Open Logic Pro 13 on Mac Studio M1 Mac 32 GB running macOS 27.2 (26B123) with Complete Features enabled in Logic Pro > Settings > Advanced.
- Navigate to Logic Pro > Settings > Plug-in Manager.
- Select Top Level in the top-left Category pane.
- Click the + icon next to Category.
Expected Result:
A new custom category row or naming prompt should appear, allowing the user to type a folder name and press Return to create it.
Actual Result:
- Clicking the + button produces no visible text prompt or new folder entry.
- Pressing Return afterward causes the window/screen to briefly dim and return to normal brightness, suggesting a modal prompt or sheet is failing to render on screen.
- The issue occurs identically in both the Logic Pro 13 Creator Studio subscription app and the standalone version, even after deleting/regenerating ~/Music/Audio Music Apps/Databases/Tags and verifying full Read & Write folder permissions.
Workaround Found:
Manually adding the custom category string to MusicApps.properties (under sorting) and registering the matching key in MusicApps.tagpool allows custom folders to appear and accept drag-and-drop plug-ins normally, confirming the underlying database write permissions work as expected and the issue is isolated to the UI trigger.