I only use the modded theme that allows coloured titlebars, nothing else This is the theme http://www.windowscentral.com/replace-those-white-title-bars-windows-10-colors-theme I hope this is not the cause, because white titlebars are horrendous, and not getting TH2 means this is the only way to have them coloured SiB 1.1.6 does not have this problem, even with the modded theme, it has only been introduced with 1.1.7