Safari 11 seems to have issues around some part of the implementation of printThis. Sometimes it'll prompt the user to ensure if you want to print or not, and after hitting yes it has inconsistent results. It'll either work fine, print a blank page, never display the print dialog, or even crash. It kind of feels like a bug in safari but maybe it can be worked around.

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I use printThis in an ember addon. There's a demo below that reproduces the issue but if desired I can make a vanilla print this demo to show it off.

https://lucashill.github.io/ember-print-this/

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Steps to reproduce the problem

1. ... Try to print

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What is the expected behaviour?

... print dialog displays with content

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What is the observed behaviour?

... inconsistent as described above

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When you set debug:true and inspect the iframe, what do you see?

... I can try this later sorry.

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More Details

• Which browsers/versions does it happen on? Safari 11
• Which printThis version are you using? 1.12