Can't import (into Studio 2019) an XML file produced with pub2xml (from Publisher) because of an "illegal hexadecimal character". Any idea?

Using pub2xml (version 2.1.0.0) and the latest version of Microsoft Publisher (2020) (version 2007, Build 13029.20308 Click-to-Run), I successfully exported a 24-page Publisher document to produce a small XML file (228KB), but when I import this XML file into Trados Studio 2019 SR2 (latest version, 5.2.7.2849), Studio tells me: "hexadecimal value 0x0E is an invalid character". 

So I open the XML file in Notepad++, thinking perhaps I can delete the odd character and Studio will be happy, so I open Notepad++ and go to Find and I search for "\x0E" as a regular expression (this seems to be Notepad's regex notation), but Notepad++ says it can't find the character in question. See below:

If the character is not in the XML file, then does this mean there is a bug in the Trados Studio 2019 XML filter? Any idea on how to resolve this?