🐛 Ignore setting dimensions for destroyed decorations

spec/text-editor-presenter-spec.coffee

@@ -2375,6 +2375,15 @@ describe "TextEditorPresenter", ->
             isVisible: true
           }
 
+        it "doesn't throw an error when setting the dimensions for a destroyed decoration", ->
+          blockDecoration = addBlockDecorationForScreenRow(0)
+          presenter = buildPresenter(explicitHeight: 30, lineHeight: 10, tileSize: 2, scrollTop: 0)
+          blockDecoration.destroy()
+
+          presenter.setBlockDecorationDimensions(blockDecoration, 30, 30)
+
+          expect(getState(presenter).content.blockDecorations).toEqual({})
+
       describe ".overlays", ->
         [item] = []
         stateForOverlay = (presenter, decoration) ->

src/text-editor-presenter.coffee

@@ -1270,6 +1270,8 @@ class TextEditorPresenter
       @emitDidUpdateState()
 
   setBlockDecorationDimensions: (decoration, width, height) ->
+    return unless @observedBlockDecorations.has(decoration)
+
     @lineTopIndex.resizeBlock(decoration.getId(), height)
 
     @invalidatedDimensionsByBlockDecoration.delete(decoration)