TOC is missing headings generated by macros when referencing a page different from the current one

Steps to reproduce

1. Create Page-A.WebHome with following content:

{{toc/}}

== Section 1 ==

== Section 2 ==

{{velocity}}
#foreach ($section in ['Section 3', 'Section 4'])
== $section ==
#end

== Section 1000 ==

{{/velocity}}

The generated TOC contains the 5 sections headings, as expected

2. Create Page-B.WebHome with following content:

{{toc reference="Page-B.WebHome"/}}

Expected result

The generate TOC in Page-B is the same as the one generated in Page-A.

Actual result

In Page-B, the generated TOC contains only the headings outside the Velocity macro, i.e.:

• Section 1
• Section 2