I assume this thing just stays since ExtJS 3 where the ComboBox's pageSize is really used as a number. But maybe is it time to change? Maybe a boolean config like "enablePaging" or "showPagingToolbar" would be better. Or are you planning to pass the ComboBox's pageSize to its Store's pageSize?
Actually, it is reported in the docs, but it doesn't look just a doc issue.
Yes, the pageSize config is essentially just a boolean now because paging is handled by the store itself. It's mostly a backwards compatibility thing, but we should probably phase out the config for something a bit clearer.
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