HELP!!!!!!!A bug of combobox in filtering mode!!

when the option value string contain a char" & “, for example “xyz & fhfh”
it cannot perform filter function as when i type xyz & , the combo box will just turn off the value that filter before, and no more filter after” & "this char

I don’t know if it is the bugs of the box or just some restriction to the input

Plz help me, i really want to use this combobox to contruct a list of value contain & and some other special char, THX

Do you load options from the xml?

Please provide the example of combo initialization