Incorrect TOC indentation in FO

Hello,

In the XSL for FO v.1.68.0, the new param
body.indent.start, part of the new set.flow.properties
template is applied only to the first level of the
default generated TOC (component.toc template)

This can result in a TOC with a first level having a
bigger indent than the lower levels.

FInd attached a small example showing this case.

I do not use any custom layer.