OS: Windows 7 Professional, SP1, 64 bit
Processor: Intel Core i7-2600 CPU @ 3.4GHz
RAM: 16 GB
Graphics card: ATI Radeon HD 3400
Broken: 2.78c Hash: e92f235283
Broken: 2.77a Hash: abf6f08
Short description of error
The latest change to text in the text editor is reverted when the Add Mesh Primitive input values change.
Exact steps for others to reproduce the error
Type text into the Text Editor
Add a Plane mesh object to the 3D View (Shift-A, M, P)
Change the Radius in the Add Plane pane in the bottom-left of the 3D view
The text you typed into the text editor should be gone now.