OPTICKS-1521 - Crash when displaying color map editor for RGB display mode

[tclarke]

1. Open an image
2. Change the display to RGB
3. Open the Histogram Window
4. Right-click in the Histogram Window and select "Create/Edit ColorMap"
5. Opticks prompts you to change the display from RGB to Grayscale. Click yes; Opticks crashes.

Opticks crashes because the parent object of the ColorMapEditor (HistogramPlotImp) is deleted prior to being set as the parent object. The deletion is a result of changing from RGB to Grayscale.

Original Issue: OPTICKS-1521
Status: Deferred
Feature Interpretation:

Suggested Solution:

Actual Solution:

Severity: 2-Critical
Version Control:
Environment: All
Linked:

[github-actions]

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