Editing limits in maxed patterns (insert and copy/insert)

Hi, I am using the latest firmware and noticed that in a maxed out pattern (99 steps), despite the presence of a following pattern, it does not appear to be possible to copy/insert, or insert a step in the full pattern.

Using same parameters with an unmaxed pattern shows no issue, ie: editing with insert or copy/insert in same pattern works.

As anyone else experienced this or is it a feature that could be useful to add (ie: a maxed out pattern would permit inserting new steps by pushing following steps in the new pattern).

Or am I simply doing something wrong?