I have some trouble with an ExtJS4.2.x application if the user zooms the webbrowser (i.e. to 120% or even more). Some customers don't seem to be able to read all content of the grids, so they zoom the application via webbrowser technology instantly (as they do with every website). Now, the application seems to have some trouble i.e. during reloading grid content, if one or more column has the attribute "flex" set to a value: these columns grow about a pixel or two every reload of the grid (reload of the store is done via the paging toolbar). Sencha support only told me that zooming is not supported in ExtJS.
Do you have any hint or best practice how to solve this situation?