Problems with Grouped Header and HeaderFilter

[crocop21]

Hi all, i am looking for some help with Grouped Header columns and HeaderFilter, because is not working the HeaderFilter in the columns who are child, u can see this in this image

39431

But the columns who are not child i mean single they work fine.

39432

I dont know if Extjs 4.1 doesnt support this or maybe need to modificated something.

[crocop21]

Up, please need some information about this.

[Fire-Dragon-DoL]

This is interesting me too, I'll need to use it in my next job.