mysql client aborts connection on terminal resize

While running various sql scripts we hit "Lost connection to MySQL server during query" frequently.
Have tried both, network and unix socket for connection => same result. We have increased all timeout variables as well.

We use mysqld_multi for multiple percona installs.
OS: CentOS 6
Pkgs:
Percona-Server-client-55-5.5.19-rel24.0.204.rhel6.x86_64
Percona-Server-shared-55-5.5.19-rel24.0.204.rhel6.x86_64
Percona-Server-shared-compat-5.5.19-rel24.0.204.rhel6.x86_64
percona-toolkit-2.0.2-1.noarch
Percona-Server-server-55-5.5.19-rel24.0.204.rhel6.x86_64

The database itself is quite large: 72G (du -sh)
All "InnoDB" tables.

[mysqld5]
socket = /var/lib/mysql-db/mysql.sock
port = 3311
datadir = /var/lib/mysql-db
max_connections = 300
innodb_buffer_pool_size = 10G
query_cache_size = 500M
log-bin = server-db-bin
relay-log = server-db-relay-bin
log-slave-updates
log_slow_queries = server-db-slow.log
long_query_time = 5
log-warnings
expire_logs_days = 7
binlog_format = MIXED

[mysqld]
basedir = /usr
datadir = /var/lib/mysql
port = 3306
socket = /var/lib/mysql/mysql.sock
max_allowed_packet = 64M
table_cache = 2048
max_heap_table_size = 256M
tmp_table_size = 256M
join_buffer_size = 3M
sort_buffer_size = 4M
read_buffer_size = 1M
read_rnd_buffer_size = 1M
myisam_sort_buffer_size = 64M
thread_cache_size = 256
query_cache_limit = 4M
low_priority_updates = 1
innodb_log_file_size = 512M
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 8M
innodb_thread_concurrency = 16
innodb_flush_method = O_DIRECT
innodb_file_per_table = 1
server-id = 10
skip-slave-start
old_passwords = 1
character-set-server = utf8
net_read_timeout = 240
net_write_timeout = 240
connect_timeout = 240
tmpdir = /data/mysqltmp/

[mysqld_multi]
mysqld = /usr/bin/mysqld_safe
mysqladmin = /usr/bin/mysqladmin
log = /var/log/mysqld_multi.log

Any hint on what is going wrong here? The frequent "lost connection" makes any db upgrade process very painful.
We have not seen this issue before, using vanilla mysql 5.0 and 5.1.