I have two screen shots here (total 80kB) of the same document displayed in 13x and in 14x.
The primary point to make is that the similarity of appearance between the two is very impressive. The line breaking algorithm appears to be identical. Differences: * The minibuffer has disappeared :-( Known issue. * The vertical spacing between lines is slightly different. 14x takes slightly less space per line than 13x. 13x looks better in this regard IMO. * Math macros don't display correctly. Known issue. * The appearance of open floats has changed. 13x: [float: Figure] ---------------------------- | contents | ---------------------------- 14x: [float: Figure]--------------------------- | contents | ---------------------------- * The caption in floats is no longer prepended with "Figure #:". This is a regression. * The button representing an external inset used to wrap the legend in square brackets" "[XFig: cvolume]" vs "XFig: cvolume". Conscious decision to change. * The protected space in texted was displayed in blue and now is displayed in red. Conscious decision reflecting the many more available types of space supported natively by LyX. * In mathed the dot of \dot{m} is no longer displayed. * Using the scrollbar in 14x feels *much* more sluggish than it does in 13x. However, the screen no longer flickers as the scrolling takes place. (This is with the Qt frontend.) * LyX 13x used to break lines at protected spaces. No more. Well done, boys! -- Angus