It's a feature request.
Pidgin from version 2.4.0 does not allow to resize input field manually -
developers are denying to make it optional, but some one wrote a simple plugin,
which does to job. Is there any chance to have this plugin included in Fedora repo?
Plugin is described here:
This will not be included in the Pidgin package. Feel free to package it up
separately for inclusion in Fedora, following the standard procedure for
introducing new packages in Fedora.