I had the same problem. A change may not be captured because a button did not trigger the change event. I found the following in the code:

// Trigger onChange for each button handle
this.change(this);

I'm not very good with jQuery but I think there may be two problems with this:

1. The argument given to change may trigger event registration instead of event triggering. According to the docs no argument should be given to trigger events.
2. I think this is the container for the markdown field. In general I think this is the textarea element but there is also some sort of inline editing support. In that case maybe it isn't?. Other code seems to refer to this.$textarea to explicitly target the textarea (which I think is what we want).

Given those two issues I change the code to:

this.$textarea.change();

Interactive testing seemed to show that this works.

this is the instance of the Markdown object itself -- not the Texarea element. @eric-hemasystems is correct, use this.$textarea as this holds the element itself.

@lodev09 the bug that you have confirmed in your comment exists within this repo, it is not something that users of this library can change. Can this issue be re-opened until the fix is merged?