Hey there,
We've noticed an error with 'splice' in 'Collection.js' that also exists on the Advanced Example when calling 'project.load()' after applying a filter.
Steps to Reproduce
Open the Advanced Example here: https://www.bryntum.com/examples/gantt/advanced/
Click the filter icon on 'Assigned Resources', type 'Celia' and hit enter
From the console call 'gantt.project.load();'
You'll notice the 'TypeError' in the promise will case it to load endlessly because 'values[removeIndex] is undefined'.
We must build a feature soon where changing certain filters triggers new data to be loaded. Are you able to fix this as a bug? What workarounds would be available? We noticed clearing the filters on the 'taskStore' avoided this error but we need filters to be preserved.
We are using React
