Triple braces sometimes render wrong

The following template:

<h1>head</h1>
{{{model}}}
<div>foot</div>

sometimes results in rendering the content of model after the <div>foot</div>.

Reproduction: https://ember-twiddle.com/2cadbc4061c5444402d3462afd892ce7?openFiles=templates.application.hbs%2C&route=%2Fmy-route%2F2

For reproduction first click “1”, then click “2”. It works if you directly click on the “2”.

[chancancode]

Sorry it took so long, this is fixed in 3.4.3

[chancancode]

Leaving this open until the fix lands in ember and backported into LTS