the pop up which appears on right side of document on touch is a nightmare as it will scroll the document page back and forth while we accidentally touch over it while reading.so it should be avoided or change its position to left side or somewhere else.I am using my right hand index finger for scrolling pages while reading and many time my hand accidentally touch on pop up of page no.and the document will scroll suddenly back and forth and again we have to find the page we have been reading last.please remove the feature of page number pop up which appears on all time while touching the document page