<p>Happened to me more than once recently with latest pharo8, had to discard an image because could not save it anymore (GC is triggered when saving)</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br />You are receiving this because you are subscribed to this thread.<br />Reply to this email directly, <a href="https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/391?email_source=notifications&email_token=AIJPEW2L3UF4C6UXNKQDLZDQTFC3DA5CNFSM4HGFXY52YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEDWTRLI#issuecomment-552417453">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe-auth/AIJPEW64HVJRP7F6BAFY5UDQTFC3DANCNFSM4HGFXY5Q">unsubscribe</a>.<img src="https://github.com/notifications/beacon/AIJPEW4W3TGXRAATAM2UFH3QTFC3DA5CNFSM4HGFXY52YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEDWTRLI.gif" height="1" width="1" alt="" /></p>
<script type="application/ld+json">[
{
"@context": "http://schema.org",
"@type": "EmailMessage",
"potentialAction": {
"@type": "ViewAction",
"target": "https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/391?email_source=notifications\u0026email_token=AIJPEW2L3UF4C6UXNKQDLZDQTFC3DA5CNFSM4HGFXY52YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEDWTRLI#issuecomment-552417453",
"url": "https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/391?email_source=notifications\u0026email_token=AIJPEW2L3UF4C6UXNKQDLZDQTFC3DA5CNFSM4HGFXY52YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEDWTRLI#issuecomment-552417453",
"name": "View Issue"
},
"description": "View this Issue on GitHub",
"publisher": {
"@type": "Organization",
"name": "GitHub",
"url": "https://github.com"
}
}
]</script>