Flexible layouts do not save changes when switched into "rows" mode

[akhenry]

Summary

A newly created flexible layout will lose all changes on save and revert to an empty layout if the layout is created in "rows" mode. Columns mode seems to work ok.

Expected vs Current Behavior

Flexible layouts should retain all changes on save.

Steps to Reproduce

1. Create a new flexible layout
2. Click on the button to switch the orientation to "rows"
   
3. Drag two objects into the layout. I used two different sinewave generators, but I don't think it matters what you use.
4. Click "Save and Finish Editing"
5. Observe that the layout is now empty.

Environment

• Open MCT Version: 0a40c8d
• Deployment Type: local

Impact Check List

• Data loss or misrepresented data?
• Regression? Did this used to work or has it always been broken?
• Is there a workaround available?
• Does this impact a critical component?
• Is this just a visual bug with no functional impact?

[khalidadil]

Verified in Testathon on 04/21/22

[akhenry]

This might be a specific manifestation of #5097

[davetsay]

Lol. I did not see you linked this issue. This is absolutely a specific manifestation of #5097 . Its not the row/column orientation. Its the modifying of the object in which you are modifying composition. Interestingly enough, composition changes before the toggling of row/column mode will be persisted. After that modification, we seem to be using a stale model and so changes are not persisted.

Closing and updating description of other ticket.

[akhenry]

Verified fixed!