Created attachment 124933 [details]
dummy DB

On step 5 of mail merge wizard the preview on the right is missing and when you uncheck the "align to text body" checkbox LibreOffice hangs and then crash.

Steps:
1) New writer document
2) Tool -> mail merge wizard
3) On step 1 select "use the current document" -> next
4) On step 3 select "Letter" -> next
5) Click on "Select a different address list"
6) Add the attached dummy DB
7) On step 3.2 select "This document shall contain an address block"
8) Click the "more" button
9) Click on "New" and add the fields "First Name" and "Last name" and click "ok" and "ok"
10) on step 3.3 click the button "Match Fields" and combine "First name" with "Nome" and "Last Name" with "Cognome". The preview shows "Mario Rossi" -> "ok"
11) click "next"
12) on step 4 click "Next" without creating a salutation
13) On step 5 uncheck the checkbox "Align to text body"
14) hang and crash.

Current: on step 5 of the wizard "Adjust layout", the preview on the right is missing and LibreOffice hangs and crashes.

Expected: users can uncheck the option and go to step 6 "Edit document"

IDEA: something related to bug 93719?

Issue on versions:
Version: 5.0.3.2
Build ID: e5f16313668ac592c1bfb310f4390624e3dbfb75
Locale: it-IT (it_IT.UTF-8)
OS: openSUSE Tumbleweed (20160422) (x86_64)

Version: 5.0.4.2
Build ID: 2b9802c1994aa0b7dc6079e128979269cf95bc78
Locale: it-IT (it_IT.UTF-8)
OS: openSUSE Tumbleweed (20160422) (x86_64)

Version: 5.0.5.2
Build ID: 55b006a02d247b5f7215fc6ea0fde844b30035b3
Locale: it-IT (it_IT.UTF-8)
OS: openSUSE Tumbleweed (20160422) (x86_64)

Version: 5.1.2.2.0+
Build ID: 10m0(Build:2)
CPU Threads: 4; OS Version: Linux 4.5; UI Render: default;  
Locale: it-IT (it_IT.UTF-8)
OS: openSUSE Tumbleweed (20160422) (x86_64)

Works on:
Version: 4.4.7.2
Build ID: f3153a8b245191196a4b6b9abd1d0da16eead600
Locale: it_IT.UTF-8
OS: openSUSE Tumbleweed (20160422) (x86_64)

Version: 5.2.0.0.alpha1+
Build ID: eb7593daa4bac21bd68182c8bbbd3ee3bd7b64dd
CPU Threads: 4; OS Version: Linux 4.5; UI Render: default; 
TinderBox: Linux-rpm_deb-x86_64@70-TDF, Branch:master, Time: 2016-05-03_07:06:45
Locale: it-IT (it_IT.UTF-8)
OS: openSUSE Tumbleweed (20160422) (x86_64)