Inserted special character for current page number is not refreshed from the plugin since version 20.0.
In previous versions, after adding a new section using kNewSectionCmdBoss, the page information was refreshed.
Now the section is changing, the page number in the information bar at the bottom is correct, but the page number in the text frame with inserted special character has stopped updating.

When the same is done via the Sections window in Indesign (Numbering & Section Options) with the start of new section field set, it works.