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Template editor causes page unresponsive when template has lot of parameters
Open, Needs TriagePublic

Description

A template as used in https://en.wikipedia.org/wiki/Varna (The climate table) has around 100 template params. The UI we give list each of them and one can select a target param from dropdown. That dropdown has 100 items. This causes resulting HTML generated too big and causes considerable screen lag. I measured 4MB of html for the template editor.