Undo/redo functionalities not working in GoJS 1.7.1?

GoJS
1

undo/redo was working fine in GoJS 1.6.7 but when I upgraded to 1.7.1, this error was shown in the console.

undo error: TypeError: Cannot read property 'key' of null

Thanks

2

More information, please.

3

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I created a node and when I pressed CTR;+Z the content in the node was removed but the node stands there and the message I provided above appears in the console. I’m not overriding dokeydown listener here.

4

Have you overridden any properties or methods at all?

How did you create the node?

5

I’ve overridden some methods such as copyselection/pasteselection.

It was all working perfect in 1.6.7 but not in 1.7.1.

I have not set any special property in Node creation code. It’s all from the orgChart sample.
Should I provide node creation code?

6

Do you use any undocumented properties or methods?

Yes the code for the overrides and node creation might be useful.