Right-click context menu no longer appears on macOS (ProperTree 0.3.5)

[dreamwhite]

Environment:

• ProperTree 0.3.5
• macOS Tahoe 26.5.1
• Opened through the ProperTree.app (created using the script)
• Python 3.14.5 (installed via Homebrew)

Issue:
The right-click context menu no longer appears anywhere in the plist tree view.

Expected behavior:
Right-clicking a key or dictionary node should display the usual ProperTree context menu, including actions such as:

• Add Child
• Remove
• Duplicate
• Sort etc

Actual behavior:
Nothing happens when right-clicking.
The plist remains editable and other functionality appears to work normally.

Additional notes:

• No settings were intentionally changed before the issue appeared.
• The problem persists after restarting ProperTree.
• ProperTree settings do not appear to contain an option that disables the context menu
• The issue occurs when attempting to right-click dictionary nodes within config.plist