Notes, without an extension…

Hi,
Anyone else noticed, that if you write a note in KOReader’s Text editor without an extension ( ie .txt or .md), it doesn’t show up in KOReader’s File Browser. So you can’t edit it, even to add the extension, unless you connect to a computer to edit the file name, which seems a bit of an oversight in this most excellent of reading programs.
Or is this just happening to me on my Kobo Glo from 1812…
…which is happily using KOReader version 2024.11 by the way.