dhtmlxgantt get a Uncaught TypeError: Cannot read properties of undefined (reading 'toLowerCase') when i toggle fullscreen

Question

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When I enter or exit gantt fullscreen by calling the ganttRef.expand()/ganttRef.collapse() method, I got this error. Can someone tell me roughly what went wrong, or how to fix it

The program didn't crash, but I expect no errors.

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Is it listening to errors caused by gantt reconfiguring the layout in fullscreen mode

Answer 1

I couldn't reproduce the issue with the simple configuration (without custom layout configuration): https://snippet.dhtmlx.com/jxobzydw

And the issue is not reproduced with the custom layout configuration: https://snippet.dhtmlx.com/jwwjqbuc

https://snippet.dhtmlx.com/c7ifv2ig

It is hard to suggest what might be wrong as I don't see your code. Please add your configuration to the following snippet and make sure that the issue is reproduced there: https://snippet.dhtmlx.com/40tsh9uz

Then, click on the Save button and send me the link. Or send me a ready demo with all the necessary JavaScript and CSS files so that I can reproduce the issue locally.