Merge pull request #9422 from elemoine/tile-render

Clear context when source revision changed (v5.3.x fix)

src/ol/renderer/canvas/TileLayer.js

@@ -234,7 +234,8 @@ class CanvasTileLayerRenderer extends IntermediateCanvasRenderer {
           canvas.width = width;
           canvas.height = height;
         } else {
-          if (this.renderedExtent_ && !equals(imageExtent, this.renderedExtent_)) {
+          if ((this.renderedExtent_ && !equals(imageExtent, this.renderedExtent_)) ||
+              this.renderedRevision != sourceRevision) {
             context.clearRect(0, 0, width, height);
           }
           oversampling = this.oversampling_;