Hi Karl,
I tested the X3-playground with my touchscreen laptop and iPad.
Here are some issues that I encountered.
Besides these: I really like what i see
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Windows 8.1
Touchscreen
Chrome 34.0.1847.131 m (opened on desktop)
IE 11.07 (opened on desktop)
1) Touchsreen sensitivity CHROME
Menu: The horizontal menu is not touchsreen sensitive, though it is possible to highlight a menu item (after pressing the stylus half a second, not just by clicking on it). It doesn't open a new screen. This is also the case with the left/right arrows that should jump to the next menu-item screen.
Image: And touching on an image with the stylus does not open the pop-up slideshow.
Slideshow: In contrast the left/right/up/down slideshow-arrows are perfect responsive with the stylus.
2) Touchscreen sensitivity IE
No problems here, but when touching 'Concepts' with the stylus it does not unfold the submenu, but it takes you immediately to the Concepts main page.
3) Scrolling with the stylus in Chrome is very sluggish, while in IE it is very smooth and fast
4) When entering a text in the contact form it's saying that it doesn't want an empty text...
but it's probably a precaution from you so to have not thousands of e-mais
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iPad
iOS 7.1.1
Safari
Chrome (has the same of the issues below as with Safari)
1) Touchsreen sensitivity iPad Safari
The buttons to open and close the menu respons immediately, but for the menu-items you've got to hold the stylus a little bit longer to activate.
This seems also be the case when selecting an image to get the pop-up slideshow... it is not just a quick click but you have to press a little bit longer.
2) Screenbox Mega/Mini do not show any pictures at all.
And afterwards Safari crashes and sometimes even restarts the iPad!
I noticed that there are more pages that do not show images and can make Safari crash.
3) When touching 'Concepts' it only unfolds the sub-menu, so it is not possible to get to the Concepts main page.
Martin