Created attachment 55955 [details]
Gradual changes of control's position and size

Problem description: 
After saving the document, and opening it again, form controls (buttons, drop-down lists) aren't at the position they were at before saving, and their size is changed. After repeating the proces several times, the position and size are changed dramatically. This can be seen in screenshots attached, where first image is document before closing and opening it again, and last one is after 4-th saving/opening (I entered 1 in one cell, and erase it, just to make the change).

Text on butons after 4-th opening/saving is almost unreadable. This makes my document almost unusable.

Steps to reproduce:
1. Make a document, put some controls on it
2. Save document and close it
3. Open document -> control positions and size is changed

Current behavior:
Controls change their position and size after saving and opening again

Expected behavior:
Controls should be at the exact same position where I left them, and at the same size as I left them.

Platform (if different from the browser): 
Ubuntu 11.10 32-bit, LibreOffice 3.4.5 from official PPA
              
Browser: Mozilla/5.0 (Ubuntu; X11; Linux i686; rv:9.0.1) Gecko/20100101 Firefox/9.0.1