1C:Enterprise 8.3.4 Data Composition schema bug.

For information
platform version is 8.3.4.365 (turkish).
Web clients in windows: firefox, chrome, i-explorer.
server: ubuntu server 12.10
dbms: postgresql 9.2
web server: apache 2.22

If in data composition schema in any expression field defined exported global function and report is generated by script global functions are not triggered and appear error.

This is not a bug, such system behavior was realized in 1C:Enterprise 8.3.1 and described in the v8update.html

A row is deleted in the following cases:

• The row does not contain any data, and you click in any area outside the new row.
  
• The row does not contain any data, and you move to another row using the keyboard
  

1C:Enterprise Developer Guide contains the following instruction (10.3.4.12):

A data composition mechanism expression may contain function calls of global
common modules of the configuration and nonglobal common modules with
the Client (ordinary application) (if a standard application is used) or Server
(if a managed application is used) property set.

Does your function meet the requirements?

Of course as noted before function is exported global function.

Could you please provide a configuration where your problem can be reproduced?