Some ligatures failing in .woff in Chrome and Edge

I made a font in Font Creator that uses lots of ligatures. The .otf version works beautifully on all platforms that support ligatures. Then I converted the font to .woff to display it in a browser.

Interestingly, in Safari and Firefox, all ligatures appear correctly.

In Chrome and Edge, however, some, but not all ligatures fail (about 50% of them).

Any idea how I might go about finding the issue? Is this anything you’ve heard of before?

Here is the project file: https://www.dropbox.com/s/1s7allj9ptfrwcn/MusGlyphs.fcp?dl=0

And here is the preview box in which I’m testing it, at this link: https://www.scoringnotes.com/?p=23430&preview=1&_ppp=1af550f0ef

I am not sure why it fails with FC13, but the font generated by FC14 works just fine. See this web page:

https://forum.high-logic.com/postedwebfonts/musglyphs/musglyphs.html

We intend to release this new major version at the end of May and will invite people for beta testing in a couple of weeks.