unable to copy/paste encrypted message from iOS

Using an iPhone 6+ with iOS 8.4.1:
1. Browse to https://keybase.io
2. Sign in
3. Tap the "encrypt" (lock) icon
4. Select a Keybase user as recipient
5. Enter some message text
6. Check the "sign" checkbox
7. Enter my passphrase
8. Tap "encrypt"

At this point the site presents me with a block of encrypted text; however, I couldn't find a way to copy the text into my clipboard.

Tapping the text once generated a selection highlight which extended beyond the confines of the textarea, but tapping that selection highlight, or tapping-and-holding, pulled up the keyboard and entered editing mode. At that point tapping and holding gave me the option to select all, but tapping "select all" didn't create a selection highlight, or allow me to copy any text.

Please consider presenting the encrypted text in a different way (it should not be in an editable textarea) and/or making a UI element that, when tapped, copies the encrypted content to the clipboard.

Reproduce the encrypted-message flow on keybase.io using the reported iOS setup, then inspect how the encrypted output is presented. Done means an iOS user can reliably copy the encrypted content to the clipboard without the current selection and editing problems.

Written by the indexing model from the issue text.