Please refer to the below Jira raised back in 2013, which is now in resolved status
https://jira.atlassian.com/browse/CONF-30371

There have been comments made to this Jira that the issue is not resolved. There are 17 people watching the issue but we have had no feedback

I will have to start using Google Docs if this issue isn't resolved - we need to be able to freeze rows and columns in a table using Confluence, when the tables are large - we are able to scroll but loose where we are.
The functionality is there - its just that its not working.

I have to use a large table in the wiki (confluence) and there is a bug - the sticky columns won't work if you have a sticky row. If you have a large table, the chances are you need to stick both the header column and the header row. (they could have merged cells in the headers). We don't have a lot of colours to choose from to highlight our tables.
Plug in does not work on Cloud Instance