As replied by reporter in another mail install of cinnamon-desktop-environment metapackage (probably with recommends as I suggested) solved the problem. A specific package/s related should be find and should consider if add to deps (or moved from recommends/suggest), need also to check if some adds of missed deps done in cinnamon 3.4 packages and 3.6 (in debian gits) have "already" solved this.
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