cnf

Summary:
We need a container to hold accessories. For example project panels in code editors. But one that doesn't resize the valuable real estate of a window when activated.

Steps to Reproduce:
Open an editor like chocolatapp or textmate 2 beta, and resize it so the text area is about 700px wide (half the screen real estate on f.e. a 13" MBA) or about 84 columns. Toggle the project drawer (or equivalent). When this was done with a drawer, the area of the window containing the text, your _code_, stayed unaltered. With navigator style panels that area gets resized.

Expected Results:
No action, for whatever reason, should ever resize/move the text area of a text/code editor (or the actualy valuable screen real estate of an app). The actual active part of the app that contains the data you are focusing on (the holy area) should always be in a predictable place for the user.

Actual Results: