Description:
Deleting text with backspace slows down heavily

Steps to Reproduce:
1. Open the attached file
2. Open a process monitoring tool
3. Place cursor at the end of the line of text
4. Press and hold backspace (notice slowdown on the first line) 

Actual Results:
CPU hammering & slowdown

Expected Results:
Not so


Reproducible: Always


User Profile Reset: No



Additional Info:
Found in
7.1

6.4

not in
Version: 6.2.0.0.alpha0+
Build ID: 401cba4c20fbc930f034168872642428d7459218
CPU threads: 4; OS: Windows 6.3; UI render: default; 
Locale: nl-NL (nl_NL); Calc: CL