I opened a Fogbugz entry :

https://pharo.fogbugz.com/f/cases/15281/Playground-opening-issue

From: franck.warlouzet@hotmail.fr
To: pharo-dev@lists.pharo.org
Date: Thu, 2 Apr 2015 15:26:31 +0200
Subject: [Pharo-dev] Playground opening issue

Hello,

Open a new Playground when one of the others is already opened is ok, but if all of the Playgrounds are minimalized, the new one will be opened very very small (Too small to be used).

Cheers,
Franck