[mzs]

I can't say what happened in this case but after you submit a patch to openssl and wait 6mo, a year, two, or even close to four, and simply don't hear anything back or if you do that they are doing something their own way instead, you just sort of lose the will and might get to simply be pragmatic and do what you need for your own job and customers after a while.

[richardwhiuk]

Probably this. Submitting patches back to open source is expensive - you have to dedicate engineers to tidying up and submitting patches, for no benefit (other than being closer to upstream, which is of marginal use, especially if there are clear forks) whereas they could be developing new functionality. In the real world, the priority if often to do new development instead.