2026.6 Mac OneNote v16.109 Custom Tags Panel Renders Blank
WebKit/WebContent sandbox cause Custom Tags Panel dispaly Blank
The Tags pane (custom tags panel) renders completely white and is unusable.
The issue appears to be a WebKit/WebContent sandbox restriction introduced in macOS 26 (Tahoe).
Relevant log errors:
- WebContent[8929] Connection init failed at lookup with error 159 - Sandbox restriction
- WebContent[8929] The sandbox in this process does not allow access to RunningBoard
- ProcessAssertion::acquireSync Failed to acquire RBS assertion 'WebProcess NearSuspended Assertion'
Environment:
- OneNote version: 16.109.3 (26053122)
- macOS version: 26.5.1 (25F80)