<p>Always happens. It might be Mac OS version dependent. On 10.14.3 without an external monitor connected on my MBP I can reliably reproduce it in a Pharo 7 or 8 by opening a playground and doing</p>
<p>Display toggleFullscreen.</p>
<p>On Squeak I used</p>
<p>Display fullScreenMode: true. Display newDepth: Display depth</p>

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