This is a fresh 1.5.5.d installation.
Code:
HTTP Server: ApachePHP versie: 5.6.30-1+deb.sury.org~xenial+1 (Zend: 2.6.0)
PHP File Uploads: On
Max upload grootte: 8M
PHP Memory Limiet: 128M
POST Max grootte: 8M
Database: MySQL 5.7.17-0ubuntu0.16.04.1
Database Host: localhost (127.0.0.1)
Database datum: 20/01/2017 22:03:22
Database Data Grootte: 520 kB
Database Index Grootte: 492 kB
MySQL Slow Query Log Status: On
MySQL Slow Query Log File: /var/lib/mysql/XXXXXX-slow.log
MySQL Mode: ONLY_FULL_GROUP_BY, STRICT_TRANS_TABLES, NO_ZERO_IN_DATE, NO_ZERO_DATE, ERROR_FOR_DIVISION_BY_ZERO, NO_AUTO_CREATE_USER, NO_ENGINE_SUBSTITUTION


I am entering a new option name. After that I am editing the option name to add a comment. I this comment is longer than the maximum allowed characters for the database, a database error is shown, and generates the log shown below.

Code:
[20-Jan-2017 21:51:52 Europe/Amsterdam] Request URI: /MY_ADMIN/options_name_manager.php?action=update_option_name&option_page=1&&option_order_by=products_options_id, IP address: XXX.XXX.XXX.X#1  trigger_error() called at [/home/XXXXXX/public_html/includes/classes/db/mysql/query_factory.php:167]
#2  queryFactory->show_error() called at [/home/XXXXXX/public_html/includes/classes/db/mysql/query_factory.php:139]
#3  queryFactory->set_error() called at [/home/XXXXXX/public_html/includes/classes/db/mysql/query_factory.php:266]
#4  queryFactory->Execute() called at [/home/XXXXXX/public_html/MY_ADMIN/options_name_manager.php:157]


[20-Jan-2017 21:51:52 Europe/Amsterdam] PHP Fatal error:  1406:Data too long for column 'products_options_comment' at row 1 :: update products_options
                        set products_options_name = 'Totale schijfruimte', products_options_type = '5', products_options_length = '32', products_options_comment = 'De totale schijfruimte in GB die beschikbaar is voor je website, e-mail en databases.', products_options_size = '32', products_options_sort_order = '104', products_options_images_per_row = '0', products_options_images_style = '0', products_options_rows = '0'
                        where products_options_id = '5'
                        and language_id = '2' ==> (as called by) /home/XXXXXX/public_html/MY_ADMIN/options_name_manager.php on line 157 <== in /home/XXXXXX/public_html/includes/classes/db/mysql/query_factory.php on line 167