PgAdmin3 bug on application_name

Platform:

$ uname -a && lsb_release -a
Linux pc 4.4.0-34-generic #53-Ubuntu SMP Wed Jul 27 16:06:39 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux

Distributor ID: Ubuntu
Description: Ubuntu 16.04.1 LTS
Release: 16.04
Codename: xenial

Language: LANG=ru_RU.UTF-8
Distribution: deb http://apt.postgresql.org/pub/repos/apt/ xenial-pgdg main
Version: PgAdmin3 1.22.1 (Mar 23 2016, rev: REL-1-22-1), Latest from repo.
PostgreSQL 9.5.4 on x86_64-pc-linux-gnu, compiled by gcc (Debian 4.7.2-5)
4.7.2, 64-bit

Bug: On query "SELECT application_name FROM pg_stat_activity;" return
application name as
"pgAdmin III - ???????????????????? ????????????????"

If run from console: "$ export LANG=en_US.UTF8 && pgadmin3" and run query
return true result "pgAdmin III - Browser, pgAdmin III - Query Tool"

Problem in used locale ru_RU.

https://www.postgresql.org/docs/9.5/static/runtime-config-logging.html#GUC-APPLICATION-NAME

application_name (string)

The application_name can be any string of less than NAMEDATALEN characters
(64 characters in a standard build). It is typically set by an application
upon connection to the server. The name will be displayed in the
pg_stat_activity view and included in CSV log entries. It can also be
included in regular log entries via the log_line_prefix
<https://www.postgresql.org/docs/9.5/static/runtime-config-logging.html#GUC-LOG-LINE-PREFIX&gt;
parameter. Only printable ASCII characters may be used in the
application_name value. Other characters will be replaced with question
marks (?).

Sorry for bad english.