v4.9.1 leaves the includes alone from what I pasted in:
<script src="dmxAppConnect/dmxCalendar/dmxCalendar.js" defer=""></script>
<link rel="stylesheet" href="https://unpkg.com/@fullcalendar/core@4.4.2/main.min.css" />
<link rel="stylesheet" href="https://unpkg.com/@fullcalendar/core@4.4.2/main.css" />
<link rel="stylesheet" href="https://unpkg.com/@fullcalendar/daygrid@4.4.2/main.css" />
<link rel="stylesheet" href="https://unpkg.com/@fullcalendar/timegrid@4.4.2/main.css" />
<link rel="stylesheet" href="https://unpkg.com/@fullcalendar/timeline@4.4.2/main.css" />
<link rel="stylesheet" href="https://unpkg.com/@fullcalendar/resource-timeline@4.4.2/main.css" />
<script src="https://unpkg.com/@fullcalendar/core@4.4.2/main.min.js"></script>
<script src="https://unpkg.com/@fullcalendar/core@4.4.2/locales-all.min.js"></script>
<script src="https://unpkg.com/@fullcalendar/interaction@4.4.2/main.min.js"></script>
<script src="https://unpkg.com/@fullcalendar/daygrid@4.4.2/main.min.js"></script>
<script src="https://unpkg.com/@fullcalendar/timegrid@4.4.2/main.min.js"></script>
<script src="https://unpkg.com/@fullcalendar/timeline@4.4.2/main.js"></script>
<script src="https://unpkg.com/@fullcalendar/resource-common@4.4.2/main.js"></script>
<script src="https://unpkg.com/@fullcalendar/resource-timeline@4.4.2/main.js"></script>
But if I remove those and save again I get just this:
<script src="dmxAppConnect/dmxCalendar/dmxCalendar.js" defer=""></script>
So the way I got it to work was pasting in the temp fix from the other thread using v4.9.1.
EDIT
This leaves me having to now work in v4.9.1 because as soon as I use v5b5 and save the file, the includes are broken again.
I’m wondering if there are more differences which I’ve not spotted, though.