I'm using Captivate 2019 and ran into this the other day. I have a scalable, HTML5, 1280x720 project on a 1920x1080 monitor. For me, the playbar disappeared if Chrome resized to larger than 1357px. I wrote up the solution that worked for me on my blog. Essentially, you add a line of code to the index.html file (or _scorm) that makes it work. Note, this also impacts closed captioning!
Remember, if this works for you, you'll need to add the line of code indicated every time you republish your file. Hopefully it's something Adobe can look at and just add during publish... maybe there's already an easier way I don't know about
I hope this helps!
You can add the code to the default index.html file in your applications folder and then it will be done automatically every time you publish. That's what I've done with several fixes and it saves a lot of time and effort.
That worked super!!! I've been opening the file after publishing and editing.
Thank you! Thank you!