Thumbnails in reactos (disappeared?), Visual Task Tips not work yet too

Long ago I suggested in the Forum (https://www.reactos.org/forum/viewtopic.php?f=25&t=7992) implement a functionality similar to Visual Task Tips in Reactos, Visual Task Tips allows generate thumbnails to the open windows in Windows XP, simulating that functionality that is native in Windows Vista/7.
In these time i give the explication that some features not implemented in Reactos yet, but explorer_new has a checkbox to allow thumbnails (never work those settings, it was in the taskbar settings) but now with the recent changes I see that this option no exists more, my question is: will implement in the future or will be discarded the idea?
I testing reactos 69961 version and I see that Visual Task Tips not work correctly yet. I guess that necessary functions not implemented yet, I attach a screenshot of as should work Visual Task Tips and I think that would be good implement this idea in the Reactos (in the future), would make more friendlier, attach debug file too.
Greetings and thank you very much.