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Transforming a Panel into a TabPanel
I've transformed (Inspector right-click) a Panel into a tab.Panel, then added a Tabbar Config, then changed the docked attribute to 'bottom', this is the message I get:
TypeError: 'undefined' is not a function (evaluating 'this.getLayoutDefinition().isCardItem(child)')
If I ignore the error, everything seems to works fine (maybe more on this later)
There were some Panels inside the transformed one. Starting from an empty fresh new Panel and transform it, I wasn't able to reproduce the error.
We will be on the lookout for this issue.
If you are able to provide steps to reliably reproduce please let us know.