I encounter random Workbench crashes (i.e. Ribbon Workbench just refreshes itself as if I opened it again) and loose all previously unpublished changes. This usually happens by clicking "close too" areas that I might be customising - such as adding value rules to Enable/Display Rules. Anyway to highlight the areas or enlarge the areas so we know exactly where to click? :)
Dan Bailey commented
I'm also getting this when customizing commands. The buttons for adding actions, enable or display rules have a white space to the left that causes the page to reload if you click it. Would be great to have this fixed, as a misclick loses everything I'm working on.