Tested in LibreOffice 4.3.5.2 Calc on Windows 7.

Holly s... I have been working with LibreOffice and now after reporting two bugs for very similar crash using Pivot Table, I have found out that actually this crash appears in EVERY field in Pivot Table.

Steps in common for all of the test bellow: 
1. Type in text in fields:
A1: London
A2: Berlin
B1: 100
B2: 100
2. Mark fields A1:B2.
3. Data | Pivot Table | Create.
4. Select Source window opens. Click on OK to accept default.
5. Pivot Table Layout appears.
Now multiple options to crash the LibreOffice.

Test A.
6. Do steps from 1 to step 5.
7. Move member "London" to Page Fields.
8. Click on "London" member and press Delete key twice. Result crash.

Test B.
6. Do steps from 1 to step 5.
7. Move member "London" to Row Fields.
8. Click on "London" member and press Delete key twice. Result crash.

Test C.
6. Do steps from 1 to step 5.
7. Move member "London" to Data Fields.
8. Click on "London" member and press Delete key twice. Result crash.

Test D.
6. Do steps from 1 to step 5.
7. Click on "Data" from Column Fields. --> already fixed in bug 88455
8. Press Delete key twice. Result crash.

Test E.
6. Do steps from 1 to step 5. --> fix is preparing in bug 89108
7. Delete all members from Available Fields and press Delete key. Result crash.