### Bug fixes

Avoid the editor's geometry measurements becoming incorrect when fonts finish loading by scheduling a measure on `document.fonts.ready`.

Avoid an issue where Chrome would incorrectly scroll the window when deleting lines in the editor.

Fix an issue where in some layouts editor content would be drawn on top of panel elements.

Fix an issue where `coordsAtPos` would return null when querying a position in a block widget.

### New features

The new `lineNumberWidgetMarker` facet makes it possible to insert markers into the line number gutter for widgets.