There are several ComboBox APIs that were available in GXT 2.2.5 but are missing in GXT 3.0.x.
1.setUseQueryCache() - this API is not available neither in ComboBox, nor in ComboBoxCell. There is a private field useQueryCache in ComboBoxCell, which is initialized to true and there is no way to change its value, which makes it useless. How do I make sure that the query results are not cached?
2. setMaxHeight() - his API is not available neither in ComboBox, nor in ComboBoxCell. HOw do I set the max height of the drop down list?