Lightroom Classic 16 – Vectorscope context menu immediately disappears when right-clicking on the right side

I have noticed a reproducible issue with the new Vectorscope in Lightroom Classic 16.

When I right-click on the left side of the Vectorscope, the context menu opens normally and remains visible, allowing me to select its options.

However, when I right-click on the right side of the Vectorscope, the context menu briefly appears and immediately disappears, making it impossible to interact with.

Steps to reproduce:

1. Open Lightroom Classic 16 and switch to the Develop module.

2. Display the Vectorscope in the right-hand panel.

3. Right-click on the left side of the Vectorscope: the context menu works normally.

4. Right-click on the right side of the Vectorscope: the menu appears and immediately closes.

Expected behavior:

The context menu should remain open and usable regardless of where the user right-clicks within the Vectorscope.

Actual behavior:

The context menu immediately disappears when opened from the right side of the Vectorscope.

Environment:

• Application: Adobe Lightroom Classic 16

• Operating system: macOS

• Interface language: Italian

This issue makes some of the Vectorscope's context menu options inaccessible depending on the click position.