Hi I discovered that in Pharo 5, having two or more browser windows open significantly reduces responsiveness in the image (delayed clicks, ghosting when moving windows etc.). This is especially true if a method has been selected in two or more windows. The ghosting becomes much worse when you drag a window. I checked that the same does not happen in Pharo 4. I originally thought that there was a strong impact on CPU load too, but it’s actually not that bad. Has anybody seen this or even worked on a fix for it? If not, I’ll open a bug report. Cheers, Max