Can't undo #45
Description
What steps will reproduce the problem?
1. Open 3~10 *.vm files on eclipse 4.2.1
2. Use for a long time, maybe one hour.
3. Edit vm files, undo is disable.
What is the expected output? What do you see instead?
Can undo .
What version of the product are you using? On what operating system?
Windows 7 64, eclipse 4.2.1, JDK 1.6 64
Please provide any additional information below.
Original issue reported on code.google.com by [email protected] on 23 Jan 2013 at 8:39