Help - buttons require 2nd press on Android

I’m building an app which contains a lot of buttons that send you to different frames on the timeline. I’m creating it using wick editor on my desktop PC in Firefox. When I export as HTML and open it on my PC (tested in Chrome and Firefox) it works fine. When I open the HTML file on my Android phone (tested in Chrome and Samsung Internet) the buttons don’t work the first time they’re pressed. They display the button’s down state when pressed but don’t execute the “goto” script. If I press the button a 2nd time it works. This is the same for all buttons in the file. Any suggestions?
Thanks, Dan.