Footnotes in Indesign Server 15.0.2

[#1]

We combine an IDML (layout) and customer XML (contents) to produce INDD and PDF, using InDesign Server.
Testing InDesign Server 2020 (first 15.0.0, now 15.0.2) we encountered a problem with footnotes that we never saw using previous versions. It also does not (seem to) happen with other runs; still testing though.
After removing most content of a 400+ page document, this excerpt shows our problem. There are 13 footnotes, as you can see after doing Ctrl+Alt+/, but only 2, 3, 4, 12 and 13 show up after running our script. The script contains doc.recompose() many times, but that does not help in this case.

[#2]

We combine an IDML (layout) and customer XML (contents) to produce INDD and PDF, using InDesign Server.
Testing InDesign Server 2020 (first 15.0.0, now 15.0.2) we encountered a problem with footnotes that we never saw using previous versions. It also does not (seem to) happen with other runs; still testing though.
After removing most content of a 400+ page document, this excerpt shows our problem. There are 13 footnotes, as you can see after doing Ctrl+Alt+/, but only 2, 3, 4, 12 and 13 show up after running our script. The script contains doc.recompose() many times, but that does not help in this case.