Sliders nad CheckBoxes don’t work on touch screen…
Tested on 4.9 Preview 4…
Hello ,
I was able to reproduce this issue on our end. I have written up a report ( UE-20550) and I have submitted it to the developers for further consideration. I will provide updates with any pertinent information as it becomes available. Thank you for your information and time.
Make it a great day
Was updating my project… and i ran into this today.
Unfortunately i run a visualization app, quite a few check boxes and sliders… absolutely crippling development -_-
any updates/workarounds?
Hello KRushin,
There are no workarounds at the moment, however I have bumped up the community interest in this issue. Please feel free to revisit this thread for further updates.
Make it a great day
I’m very dissapointed… I can’t release my game because of this issue… When the most of interface don’t work, UE4 on mobile is currently useless 
I too am currently blocked in development because of this issue. I use sliders for my playback controls and since they don’t work on mobile, I can not test my video playback app.
Hello BenRetan,
I will be sure to bump up the community interest for this issue. Thank you for your information and time.
Make it a great day
Same here.
About month since bug reported and still not fixed… What a shame…
Hello ,
I went ahead and double checked on this issue for you. This issue has been resolved internally. This solution will be available in a later release of the engine.
Make it a great day
You mean that next release version fixed this bug?
What version can I use it?
My problem are not move slider bar in android and Windows.
Hello zetarus,
There is no time frame currently in place for the implementation of the solution that was mentioned above. However, you can check back on this thread for future updates.
Make it a great day
This is the fix: https://github.com/EpicGames/UnrealEngine/commit/2575b91a72885cba2741aec4ee34dfbfa82403af It’s planned for 4.9.2. Enjoy! 