Actually, it seems like rel="noreferrer" fixes this. This is bizarre so maybe this is a problem with a spooky ghost haunting my computer?

F60036 now plays correctly for me in Safari.

Linux Chrome dev channel 55.0.2859.0 (64-bit) have no issues with image paste.
Seems that it is ChromeOS specific issue.

I can't reproduce this in Chrome (OS X, Version 53.0.2785.116 (64-bit)) so it may be a behavioral change in Chrome.

I'm observing same issue in current ChromeOS 55.0.2858.0 dev branch.
At the same time image paste works in Telegram web client (seems that they use contentEditable div instead of textarea)
Do you know whether it's a chrome os bug or google deprecated DataTransfer.items in new chrome's?

doesn't reproduce anymore

This doesn't appear to even to be possible in Firefox. Here's a simple example:

From the Firefox bug and this linked one:

Truly our most useful project.

Wait for it...

Happens on test account too

I tried a couple of other devices in the simulator but couldn't get a repro -- can you try this to get a JS trace?

Let me try my spam account.

Nothing unusual. Latest iPhone/iOS

I can't immediately reproduce this in iOS Simulator or on my physical iPhone 4s. What hardware/OS version are you seeing it on?

Quoting for the main page :

Works for me on the iPad Pro. Thank you!

Seems OK for me on a physical iPhone 4s.

This is live on this server (secure.phabricator.com) -- let us know if you're still seeing issues. Seems OK for me on a physical iPhone 4s.

This is now deployed to this server (secure.phabricator.com) -- let me know if you're still seeing issues? Behavior seems OK in the simulator and with my physical iPhone 4s, but I don't have a fancy physical 6s to test.

Specifically, this is my best guess at what's going on:

Yep and to be honest this huge iPad is fairly desktop-y. The first time I saw it I kind of had to look twice to make sure it wasn't some run away item from Alice in Wonderland that had snuck into my reality.

I've marked D15135 as fixing this out of a general abundance of sunny optimism.

I think D15135 actually fixes this. I can't reproduce it in iOS Simulator after applying that patch.

D15136 distinguishes between "touch-device" mouseovers and "mouse-device" mouseovers rather than relying on device detection, since the screen resolution of the iPad Pro is apparently a billion pixels by a trillion pixels and device detection is clearly increasingly hopeless.