I want to merge some cells in a table, so I select several cells and click on merge cells. For example I select 3 cells in the first column, and it works properly. Then I select the next 3 cells, and nothing happens after "pushing the button". The 3 cells before I can unmerge and merge several times, but the next 3 do not work. This happens several times within the table, and I didn't figure out yet, what is the cause to make it work or not. Please help me soon, because a customer is waiting for a finalized documentation in his Confluence-Wiki.
My customer uses a self-managed Confluence Version 7.3.1.
Thanks in advance for your professional support and hints.