There is Plesk 12.5.30 Update #13 node registered in OBAS and a Plesk domain subscription on it.
When the subscription owner logs in to CP or Provider goes
Top > Service Director > Plesk Manager > Domains > Domain Name > Log in to CP using Internet Explorer 11, the icons are shown in one column.
Also, there is an error message under
Files > Logs:
TypeError: Object doesn't support property or method 'reduce' undefined shown.
Such behavior was classified as the software issue PBAS-30195. It was fixed in OBAS 4.5.6
To resolve the issue, please upgrade to 4.5.6 as described in How to upgrade OBAS system to the latest available version.