Merging cells breaks table borders

Question

Sometimes, merging cells near the bottom of a tables will break the boundaries of the table. Why is this happening? Here is a screenshot:

Confluence 7.9.1

Benjamin Horst · Answer

In Jira DC 9.12 at least this is easily reproducable

* Create a table in visual mode
* Save description
* Merge any cells in any direction
* Save description
* Broken table

When heading to the text view one can see that some pipes are missing.

Brant Schroeder · Answer

@Peter Huson Can you please share what you would expect to see and the steps to recreate the issue?  I can then try and recreate the issue and see what might be happening.