Go to http://mindmup.github.io/bootstrap-wysiwyg/
type something like "hi there"
select the text and click on Bold, Italic and Strike
Now go to the end of string, give a space and uncheck Bold. Notice how it gets unchecked but Italic & strike is active [this is corect]
Now uncheck Italic and suddenly Bold becomes checked [This is the issue]
So this issue got fixed for me with this pull
https://github.com/mindmup/bootstrap-wysiwyg/pull/77