Description of problem:
The window will resize and partially go out of my screen

Version-Release number of selected component (if applicable):
v2.28.3

How reproducible:
100% reproducible on my laptop (Fujitsu Siemens Amilo A7600)

Steps to Reproduce:
1. Launch Evolution. It starts with the e-mail application
2. Change application, and select Calendar
3. 
  
Actual results:
The window resizes and partially goes out of the window. Therefore, the square and cross buttons on top right corner are not visible anymore

Expected results:
The window shouldn't resize when changing application

Additional info:
This kind of problem is only reproducible when switching from e-mail application to other application, or from any application to e-mail application.