After a sequence, I am unable to enter text

Ed `v2.1.2`
iPhone 6+
1. _with_ an image in a post
2. touch "edit"
3. touch "close"
4. touch to focus below the image
5. attempt to type

If it works the first time, please repeat and it will likely begin to fail the 2nd.

Video for reference:
https://www.dropbox.com/s/0phtk6w4gprmx3z/Ed-cant-type.mov?dl=0