I realise this is a little old but I have this same problem now with both the latest official and beta builds. I also found a work around to the issue. First of all the settings in compatibility mode don't appear to make any difference either way but for the purpose of this report I have them set as suggested above. If I'm running 4k and scaling is set to 200% I will not see the marquees. If I set scaling to 150% then the marquees magically work again. This seems at odds to the disabling of the scaling in the compatibility options. But regardless I can get 4k to work only with 150% scaling. I