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User Agent: Mozilla/5.0 (Android 4.4.2; Tablet; rv:43.0) Gecko/43.0 Firefox/43.0 Build ID: 20151214163750 Steps to reproduce: Viewed a page for which not all content has known sizes. Actual results: A number of times a website has been loading and I've been reading content. The browser retrieves an image or content for which the size was not known before full retrieval. The browser then redraws the page which often has the result of moving the text in my focus. This often leads to constantly having to scroll back to the text often multiple times. Sometimes touching on a link can lead to following the wrong link due to the page redraw bringing up a different link in those few milliseconds. It would be nice if the browser could attempt to keep currently displayed content on the screen rather than just blindly adding to the page and ignoring the effect on currently viewed content. Expected results: Text and other media currently scrolled to by the user should stay on the screen or at least nearby.
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