Deleting a method from duplicate class removes the classification from the method of original class in Pharo 12.

[ElvinPero]

Bug description
Deleting a method X from duplicate class B removes the classification from the method X of original class A.

To Reproduce
Steps to reproduce the behavior:

1. Go to Pharo12 image.
2. Create a class A and a method X.
3. Classify method X as 'accessing' or any other.
4. Duplicate class A and name it B.
5. Remove method X from B (new).
6. The method X in A (original) is classified as "as yet unclassified".

Expected behavior
The method in original class should remain unaffected by change in duplicate class.

Video

err.mp4

Version information:

• OS: Windows
• Version: 11
• Pharo Version 12

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Pharo is a dynamic reflective pure object-oriented language supporting live programming inspired by Smalltalk. - pharo-project/pharo