I'm migrating a GXT 2 application to GXT 3 but I found an issue related to the implementation of typeahead in combos.

In my GXT 2 application I have customized the typehead so that the text written by the user is searched in the whole string of each combo option, not just within the first characters. I did this with a custom MemoryProxy implementation.

Now I've tried to do the same in GXT 3 but I see that the load method of my proxy is never called during the typeahead search it is only called when I call setData on the proxy.

Does anyone has a clue about where should I place my code to change the default typeahead behaviour?