Unable to place caret inside editor in mobile safari

[rralian]

Testing with an ipad air both with and without a bluetooth keyboard. This is somewhat intermittent, but if I test for long enough I can recreate this on all the up-to-date blogs I've tried (both .org and .com). The issue happens either when I try to tap on a particular spot in the post or when I long-tap and try to drag the caret to a particular spot in the post. I can sometimes position the cursor near the top of the post, but never within the last couple paragraphs in my post. So if I write a much longer post, I may be able to position the cursor within the first few paragraphs, but then beyond a certain point, the cursor cannot be placed past a certain line. If I try to position the cursor on a line below that, it will retain the horizontal position, but revert back up to that bottom limit line.

I've also tried recreating this issue at fiddle.tinymce.com using version 4.0.21 and I am *not* able to recreate the problem there. So it seems to have something to do with our implementation. I've tried removing our custom editor css to see if that solves the problem but it does not. So I would suspect it has to do with one of our plugins.

[azaozz]

This seems dependent on the iframe body height. iOS doesn't scroll iframes, instead it expands them to 100% height. Seems the editor iframe's body is not expanded, or the height is not set properly making it impossible to place the caret.

[azaozz]

28242.patch sets the editor body height to 200% and removes setting the height on switching Visual to Text and back. Tested on iPad with iOS 7.1 and 5.1, needs testing on iPhone/iPod.

[azaozz]

In 28626:

TinyMCE in iOS:

• Fix placing the caret at the bottom of longer posts when the keyboard is open.
• Disable resizing on switching editors and on show/hide the kitchen sink row.

See #28242

[DrewAPicture]

@azaozz: What's left here?

[markjaquith]

azaozz says he thinks this should be good. Re-open if there are further problems with this.