Due to recent events I would like to remember that you should carefully check every new Quickr (Domino) hotfix before you install it.
Sometimes there are changes in the skin files of the Quickr standard skin. And if you took a Quickr standard skin as the basis of you custom skin you should make these changes also in your custom skin files.
Otherwise bugs already fixed will still be seen with your customized places.
As it may become very time consuming to compare the old and the new files you might want to use a tool to do that. One tool I can recommend for that is "Winmerge" which is not only able to show you the differences within the files but is also able to help you in easily changing the lines which differ.