Bug: UI Steps (and other macros) cannot be placed inside of a UI Tabs

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Hello,

Experiencing more problems with Confluence Cloud this morning. When I think of UI tabs, it's basically just a logical arrangement of content, yet there appears to be at least one restriction on what can go inside a it...

From my perspective, there should be no real restrictions on what can go inside of a UI Tab. 

Trying to insert a UI Steps Macro, doesn't work, nor does copy and pasting. The macro always appears outside of UI Tabs.

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Arrg, UI Steps, Layout or Expand can also not be placed inside of a Table of Contents Zone either, which is a rather simple Macro... Come on guys, you need to be able to arrange content properly on a page either by Tabs or Table of Contents Zone, which both seem to have the same limitations (where the limitations are probably on the child being inserted Macro). 

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A few others that can't go in:

 * Layout

 * Expand

 * Chart


I mean that's pretty bad to be honest...