I have the exact same problem with a 1500 breakpoint on Chrome: Zio Totonno Hannover
The extra space occurs only on that particular breakpoint in Chrome. I have narrowed it down to this: It happens, when there is a 100% width rectangle in the background (stretched to browser width or responsive width) and there are pictures or texts on top of it, that are horizontally next to each other: muse screenshot Once I delete one text box or image, the space disappears.
Even more puzzling: there are 6 instances in my design, where a 100% width rectangle occurs (aside from the master). If I delete some of them, I find that two of them don't cause the problem even though there is no discernible difference. I have uploaded the muse file in case anyone is willing to help us: http://neomagic.de/zio-totonno/zio.zip
Thanks in advance!
Thanks for the help neomagic.sn so i have checked all the 100% width rectangles and narrowed my issue down to the prev/next buttons on the bottom slideshow, if i delete them the problem is gone! It lets me keep the text over the top one?! God only knows why.
Let hope this gets fixed or someone makes a workaround. Thx again