Updated with Pidgin 2.3.0 + OTR plugin. You can find it here.
BTW, after having installed the new version, it suffered some crashed but I didn’t have the time to discover the cause (probably it’s the OTR plugin; in fact, after disabling it, Pidgin didn’t crash again but I cannot say it for sure.)
UPDATE: I confirm, it’s the OTR plugin that causes the crash. Disable it for now, or use the previous Pidgin version.