your info is somewhat put of daye. aside from #1, these are all bugs that have been fixed. #2 was only before the feature was officially launched. #3 was fixed within a few days. #4 wasn't a bug, serving artistic nudity was intentional and part of tumblrs brand (just like an art museum would). #5 was a bug for a while and it sucked. I've never heard of #6 being an issue—its true that they use a link tracking system but I've never heard of it causing "bot traffic" issues, respectfully, that sounds like bullshit—while I hate it for privacy reasons, lots of sites use link tracking, like Google and Facebook.
I agree that most of these bugs are old; I figured the question included historical stuff, and I have a better knowledge of Tumblr's old bugs than the its new ones.
It looks like I was simply wrong on #2, thank you; I remembered it as something that had been around for ages but was noticed, then publicized. If it was found before a planned announcement, that's different.
#3 was fixed within a few days, but frankly I think "posting people's drafts with no warning" is a "damage done" thing, the same as an email client sending drafts to all listed recipients. There are reasons like the "private post" option that you would draft something and never openly publish it, and even beyond that it's reason to draft anything you might not want to publish as-is offline instead of in the site's draft feature.
#6 is complained about by plenty of other people, and happens to me perhaps 90% of the time. I realize I missed one thing: it's mobile-only. Opening a Twitter link on mobile produces a "you're rate-limited" blocking page which sticks around even if you try again later, but choosing "open in Chrome" to escape the Tumblr app immediately solves the problem. I haven't seen comparable behavior in any other app where I've followed Twitter links. Mobile-specific implies it's not purely the link tracking, granted, but it's very much a real Tumblr-specific issue.
