The text formatting buttons which physically insert characters into a question/answer field make the cursor snap out of view, disrupting typing, and leading to odd looks like this:

App post formatting

To reproduce/make it a little clearer what I mean:

  1. Create a question/answer with enough text to require scrolling.
  2. Insert e.g. a numbered list, from the formatting bar.

Looks like it may be snapping to the top of the keyboard, with no regard for the predictive-block and formatting toolbar?

This is iPhone 4s, iOS 8.1.2, and app v1.2.1.

  • And apologies for the recent barrage of posts, have got round to writing up a few problems I've come across over the last few weeks!
    – Chris
    Dec 27, 2014 at 1:25
  • I think as long as they are problems you should be okay (I've about 10/11 more problems I've to post when I get a chance)
    – Howli
    Dec 27, 2014 at 2:51

1 Answer 1


This will be fixed in the next release.

Part of the problem stemmed from bad behavior in UITextView. It appears that when you call setText: the view will purge all of the rendered text layers and then incorrectly calculate the content height on a CoreAnimation rendering pass. It then calculated the correct one on the next pass, resulting in a flicker and out of place content. After a lot of trial and error I was able to compress the steps by forcing an offscreen rendering and a layout event.

This worked well in PSPDFTextView managing its own scrolling but terribly in our app where the text view is hosted in a scroll view for the title and tag fields. Right now I've got a functional but ugly hack working and am hoping to have something better eventually.

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