Transmit text samples doesn't work on mobile safari nor mobile chrome

[jonnyijapan]

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• [x] I have provided steps to reproduce
• [x] I have provided browser name and version
• [x] I have provided a link to the sample here or a modified version thereof

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Browser affected

Browser name including version (e.g. Chrome 64.0.3282.119) Mobile Chrome iOS as of 20190328 Mobile Safari iOS 12.2

Description

https://webrtc.github.io/samples/src/content/datachannel/basic/ Doesn't work

Steps to reproduce

Open the page, tap start, but you can't enter any text in any of the text views.

Expected results

I expect to be able to input text in the text views.

Actual results

Keyboard never opens. Can't input text.

[nkev]

Same issue (cannot enter text) on Webkit OSX. Works in Firefox but not Chrome or Safari on my Macbook. Disappointing.

[fippo]

duplicate of #1123