Description:
Liber Office Write crashes when a user try to align text center in text box. The is happens even if you restart the application.

Steps to Reproduce:
1. Open New Writer file
2. Go to Format -> Page Style and set all margin under page to zero (warning shows accept it)
3. Apply and press ok
4. Draw a Rectangle rounded
5. Enter Text box and Write something
6. Select the text and from the tool ribbon select text align center

Actual Results:
Application crashes

Expected Results:
Text get aligned center


Reproducible: Always


User Profile Reset: Yes



Additional Info:
OS: Mac 10.15.3

Liber Office
Version: 6.4.0.3
Build ID: b0a288ab3d2d4774cb44b62f04d5d28733ac6df8
CPU threads: 8; OS: Mac OS X 10.15.3; UI render: default; VCL: osx; 
Locale: en-US (en_US.UTF-8); UI-Language: en-US
Calc: threaded