Created attachment 8799493 [details] whitespace-spacing-issues.html STR: - have the patch in bug 1304685 applied locally, or wait for it to land - open the test case HTML file - open the inspector - open the <span> element and check the list of children displayed in the inspector ==> you should see whitespace text nodes displayed in there - now, still with the <span> selected, add the following CSS property: white-space:pre; Expected: because this property updates the way text is laid out and how whitespace-only text nodes collapse, a reflow occurs and the content of the span is laid out again. As a result, more whitespace text nodes actually influence the layout, so the list of nodes shown in the inspector should update to reflect this. Actual: The list of text nodes in the inspector doesn't change. More info about whitespace processing here: https://www.w3.org/TR/css-text-3/#white-space-processing Potential solution: listen to reflow events (we have a ReflowActor that is used already in a couple of places in devtools). This doesn't mean we should refresh the whole markup-view every time a reflow occurs either, we need a way to know when reflows actually change what is shown in the markup-view. Right now, the only for this view to update is when markup mutations occur. In the present case, there are no mutations, it's just a layout change that impacts what is shown in the view.
Inspector bug triage (filter on CLIMBING SHOES).
Priority: -- → P3
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