Incorrect system log "time format in Terminal when GMT offset is set in "/system clock"

Router OS version: 6.27, 6.28
Devices: 2011UiAS-2HnD, RB850Gx2, 922UAGS-5HPacD

If system clock “GMT offset” is set, then working with system log in time when UTC and local time in different dates (between 00:00 and 02:00 in sample), log “time” field is incorrect.
Script to reproduce (note: system data-time settings will be changed):

/system clock set time-zone-name "CET"
/system clock set time "23:59:58"
:log info "1. Current time: $[/system clock get date] $[/system clock get time]"
:delay 4s
:log info "2. Current time: $[/system clock get date] $[/system clock get time]"
put "#Log print time: $[/system clock get date] $[/system clock get time]"
/log print where topics~"script.info"
/system clock set time "03:00:01"
put "#Log print time: $[/system clock get date] $[/system clock get time]"
/log print where topics~"script.info"

Results:
#Log print time: apr/24/2015 00:00:02
23:59:58 script,info 1. Current time: apr/23/2015 23:59:58
apr/24 00:00:01 script,info 2. Current time: apr/24/2015 00:00:02
(wrong: first line of log in previous day, but time printed without date, and second line time in current day, but date is added)
#Log print time: apr/24/2015 03:00:01
apr/23 23:59:58 script,info 1. Current time: apr/23/2015 23:59:58
00:00:01 script,info 2. Current time: apr/24/2015 00:00:02
after 3 hours (when UTC and local time have same date) all correct