Is it expected? The Put Footnote macro description says
Displays the footnotes defined so far. If missing, all footnotes are displayed by default at the end of the page.
I may by misunderstanding of course. To me this means I can have several Put footnote blocks in a single page, each only containing the footnotes added to the text before the current “Put footnote” block but after the previous one - or since the beginning of the page, if having only one.
But, if I add a second Put footnote macro with the in-place editor the macro disappears without any error.
If I use the WYSIWYG editor, the last Put footnote macro added replaces the previous one, effectively removing the old one from its position in the page.