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[resize-observer] Update initial value of lastReportedSizes #3664 #8125

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[resize-observer] Update initial value of lastReportedSizes #3664 #8125

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6 changes: 3 additions & 3 deletions resize-observer-1/Overview.bs
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Expand Up @@ -72,6 +72,8 @@ counterpart to {{Window}}'s {{Window/resize}} event.

ResizeObserver's notifications can be used to respond to changes in {{Element}}'s size. Some interesting facts about these observations:

* Observation will fire when observation starts.

* Observation will fire when watched Element is inserted/removed from DOM.

* Observation will fire when watched Element <a>display</a> gets set to none.
Expand All @@ -80,8 +82,6 @@ ResizeObserver's notifications can be used to respond to changes in {{Element}}'

* Observations will not be triggered by CSS transforms.

* Observation will fire when observation starts if Element is [being rendered](https://html.spec.whatwg.org/#being-rendered), and Element's size is not 0,0.

<div class="example">
<pre highlight="html">
&lt;canvas id="ellipse" style="display:block">&lt;/canvas>
Expand Down Expand Up @@ -331,7 +331,7 @@ interface ResizeObservation {

3. Set |this| internal {{ResizeObservation/observedBox}} slot to |observedBox|.

4. Set |this| internal {{ResizeObservation/lastReportedSizes}} slot to [(0,0)].
4. Set |this| internal {{ResizeObservation/lastReportedSizes}} slot to [(-1,-1)].

: <dfn method lt="isActive()">isActive()</dfn>
::
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