Loading multiple files (multiupload) in firefox

Have you ever had sex with flash plugins for multi-float? Especially in conjunction with nginx: “error 2038 - oh yes, baby, more!”.
Judging by the timeline, the W3C plans to finally figure out and begin recommending html5 by about 2022. But today I am suffering with the site.
But fortunately, quite a long time ago, Opera proposed and single-handedly implemented the Web forms 2.0 concept in the browser of the same name, of which the input tag extension is a part:
: input type="file"
: input type="file" min="1" max="9999″ multiple , ..

Fichu supported Chromium 3.0.191.0, Safari 4.0.1 and, accordingly, Opera. Personally, to clear my conscience to users, only the FF is missing. The bug has been hanging in the tracker since 2000, and if you’ve been struggling with the multi-pageload, I suggest you go through a simple registration and press the vote button.
I am sure that the ungrateful descendants will not even remember about this problem, but we will know that it was not always so simple.
Thank.
UPD: 35 votes now