combobox on firefox with non-latinh character (thailand) is verry slow with many item (800 item on my test)

Description

it's zk with firefox issue, but i log here for guys with same issue reference

https://tracker.zkoss.org/browse/ZK-4609

condition to get issue
combobox
non-latin language (Thailand for me)
many item (100 get slow and 1000 to can't work)
firefox

workaround => use chrome

Environment

None

Assignee

Unassigned

Reporter

Hiep Lq

Labels

None

Tested By

None

Components

Priority

Major
Configure